Digital Natives Debate

Digital Natives Debate Firstly what does a digital native mean? A digital native is a person where digital technology is already around when they were born, which mean they have grown up with digital technology such as mobile phones, computers, game consoles, mp3 and all other digital technologies. The opposite to this a person who grew up without these digital technologies and learnt how to use them later on in life for example if the person was born before the introduction of mobile phone they adapted and learnt how to use this technology these people are placed with the name digital immigrants. Now we have established the meaning of these terms we can now evaluate the debate, which surrounds this area. Marc Prensky (2001) is one of the leading experts in this field and is the one who coined the term Digital Native in his work Digital Native, Digital Immigrants published in 2001. The main argument to support the concept of digital native is that children people born in the last two decades have always been surrounded and had contact with new technology. According to Prensky (2001), the reason for an increase of technology is due to the fact that there is a hypothesized change in the brain structure that means young people process information and think in different ways compared to pervious generations(Prensky, 2001a). Prensky (2001) states, Digital Natives are used to receiving information really fast. They like to parallel process and multi-task. They prefer their graphics before their text rather than the opposite. They prefer random access (like hypertext). They function best when networked. They thrive on instant gratification and frequent rewards. They prefer games to serious work (2001). Prensky (2001) defines this younger generation as the digital natives as they, are all native speakers of the digital language of computers, video games and the Internet. Prensky refers to people who were born before this new digital era, which began around 1980, as Digital Immigrants. According to him digital immigrants may learn to use new technologies but will still be in some way always be in the past, unable to fully understand the way of the natives. According to Prensky (2001), characteristics of digital immigrants are that they do not use the Internet as their first point for finding information in, he also states thats they print documents out instead of working of the computer. The supporters of this concept suggest that the comparisons between these two groups have great impacts on education. They argue that young people now have a range of different methods and tools for interpreting and using information and the current education system dose not meet the needs of these people. So he argues that the current educational system and the way digital native are taught needs to change to meet the requirements of this generation of youth. For exa mple, Prensky suggests that educators now need to communicate in a way that the digital native find interesting and respond to going faster, less step-by step, more in parallel, with more random access, among other things Prensky (2001). A powerful teaching method, Prensky suggests, would be to use computer games to teach the digital natives as digital natives would resound to this as they find this fun and current. As Prensky (2001) states todays students are the first generation to grow up with this sort of technology. He continues to say that this generation has been surrounded by new technology like computers, videogames, mp3 players, video camera, mobiles and many other gadgets. Here are some of the facts and figures which Prensky (20010) includes are that today college graduates have spent less than 5,000 hours of their lives reading, but over 10,000 hours playing video games and 20,000 hours of watching TV. He suggest this it due to the fact that computer games, email, the Internet, mobiles and social network sites are all part of every day lives. Prensky (2001) report suggests that due to the amount of interaction with new technology student think and process information fundamentally differently from pervious generations. He then goes on to say that these differences are far greater than most educators suspect or realize in his report he quotes DR. Bruce D. Perry of Baylor College of Medicine different kinds of experiences lead to different brain structures. This is one of the reasons why Prensky suggests, our students brains have physically changed- and are very different from ours-as a result of how they grew up. Referring to (Bennet el al 2008) there is very little evidence that young people are radically different in the way they use and processes information.to justify his claims Prensky use the theory of neuroplasticity, which suggest that our brain are flexible and subject to change as a result of changes in society. Using this theory Prensky state this is why the youth of todays brains have developed differently to the adults, due to the fact that they have been brought up in a world full of new technology. However these is no answer in the way in which the brain structure has varied. Prensky (2001) admits, that the use of technology and the effects on the cognitive processes linked with learning is still being explored by neuroscientists (Prensky 2001) There is a lot of academic research that has questioned the validity of digital native concept. People in support of this digital native tend to assign board terms for example a specific learning style, amount and type of technology used to a whole generation (Bennet et al 2008). Whist the majority of young people which use the internet and other technologies is higher than older generation (Dutton and Helsper 2007) is has to be said that there are many differences in how and why younger people use these new technologies and how effectively they use them (Hargittai and Hinnart, 2008). There have been many writers that have highlighted the diversity of the use of new technologies by young people however this is minimized to support the concept of digital narrative. A important aspect of this debate is weather the difference between digital natives and digital immigrants can be explained by generational differences. Referring to Prensky work it seems that age is the most important factor. According to (Tapcott 1998) technology is the place in which younger people are better than older people he refers to this as generation lap it is about the exposer in which the person has with these technologies. However the extent in which a person is a digital narrative is a digital narrative by birth or exposer it is an important factor in policy and practice. If digital natives are defined by age then the older generation they are seen to be digitally disconnected. On the other hand if being digital native is due to exposer and experiences then it is possible for learning to take place in environment in which younger and older generations interact. However there has not been a lot of research in this area as majority of pervious studies focuses on the youn ger people using the new technologies and their parents for example (studies by Livingstone and Bober 2005). Additionally most of the research, which has been taken, place and the data produced are based on the American population. Kennedy, et al (2008) stated that educational policy maker in the UK could not make changes in the United Kingdom in response to these claims as we need more empirical evidence to inform the debate. Social researcher (Howe and Strauss 200,2003), labeled this current generation as the millenials, referring to the technology knowledge as a distinctive characteristic that set them apart from pervious generations. They offer a positive a positive view on the new generation as optimistic, team-orientated achievers who are talented with technology, and claim they will be the next great generation. Technology-rich culture is said to inspire the skills and interests of the digital natives in ways significant for education. It is said that digital natives are active experimental learner, excellent at multitasking, and dependent on communication technologies for accessing information and for interacting with other (Frand, 2000; Oblinger and Oblinger, 2005; Prensky 2001a b; Tapscott, 1999). It has been stated that these characteristics raise valid question about weather that the current education system is equipped to meet the needs of new student (digital natives). Tapscott (1998), described education in developing countries as already in crisis with more challenge to com: There is growing appreciation that the old approach [of didactic teaching] is ill-suited to the intellectual, social, motivational, and emotional needs of the new generation (p. 131). This was echoed by Prenskys (2001a) claim that: Our students have changed radically. Todays students are no longer the people our educational system was designed to teach (p. 1). The digital natives theory has found a number of supporters as well as the leading authors, who have had key influence on the theory, however there has been a lot of criticism of the theory itself and arguments. I will now probe this theory for its weaknesses; firstly none of the main people on the debate look at the negative side being a digital native can have on young people. Whilst digital natives are most often presented in a positive light, however many people are begging to relies that increate digital technology use may also lead to the disadvantages and empowerment of children and young people through risk and dangers of technology use. Many concerns have been raised amongst popular commentators and policy makers, for example the number of inappropriate uses of the Internet, which could place a child at ultimate risk of harming them self and being harmed by other. Additionally aside from the physical, emotional and sexual risks associated with the Internet, concern has been raised that the capacity of young people to learn is now measured by the ability to gather information of the internet. Andrew Keen (2001,p.93) puts it that, the current generation of school children is taking search-engine result as gospel. Which means they are just using the information of the internet to inform them selves. Furthermore Shulmeiter (2008) presents a list of critical views on the digital debate. Firstly Shulmeiter (2008) critics the lack of empirical evidence, he practically refers to Tapscott and Prensky stating that they show hardly any empirical evidence. Shulmeiter (2008) states, Their reasoning is based on examples of a highly selective sample. Despite this Prensky and Tabscott are widely cited and uncritized in further publications. Shulmeiter then begins to criticses the interpretation of empirical studies, Shulmeiter states scientific publication p nth subject make use of empirical studies on the media usage among young people. He then says that the absolution or relative data usage time is the interted to prove the existence of the digital natives. Shulmeiter (2008) criticized this process as he claims that the data is often handled as a whole, without further splitting, he also explains that insufficient comparisons are offered with the used of other media. The characteristics to describe digital natives have come from mainly unsupported empirical evidence (Bennett et al. 2008); Schumeiter, 2008) which make the data unreliable. Another Criticism of Prensky work is when he uses the work of DR Bruce D, Perry, this is at criticism as he fails to report he work of DR Perry and that the evidence showed after googling the Doctors name it can be seen that the work Doctor Perry conducted was on Child Trauma it can be argued that this does not have any relevance to digital natives.

Stages of Visibility in Invisible Man :: Invisible Man Essays

Stages of Visibility in Invisible Man In Ralph Ellison's novel, Invisible Man, the main character goes through many situations trying to discover himself. The main character, the narrator, thinks that he is a very important person. He thinks that his ideas will put an end to all the racial stereotypes in the world. The narrator does not realize that he is virtually nonexistent to everyone. The narrator goes through three states of sociality: invisible, translucent, and visible. At first, the narrator thinks of himself as being visible, however, he is actually totally invisible to everyone he meets. Hardly anything he does is accepted by the whites. He thinks people want to listen to him and that they look up to his views. He is notably naïve, and even admits to it. He forms and idea of what he wants to be when he is expelled from college. That was when he realized he was not very important to anyone. During the middle of the novel, the narrator's visibility fluctuates; this symbolizes a change. He is slowly realizing that he is really invisible to everyone. When the narrator was speaking with Mr. Emerson about a job, Mr. Emerson said "...I happen to know of a possible job at Liberty Paints. My father has sent several fellows there...You should try--" and the narrator's reply was a shut door. This shows that the narrator knows he is not entirely visible or important to everyone. He had then realized that he is just a player in a game. In the end of the novel, the narrator sees that he is visible only to certain people. Nobody cares what he does, as long as he does what is expected. Towards the end of the novel, the narrator shows that he understands his status with the white people when he refuses to consent to

Affirmitive Action In The College Admissions Process Essay -- essays r

Every year millions of high school seniors apply to colleges and universities across the country. Some get in, some don’t. These schools have strict policies on the criteria for the acceptance of such students. The criteria involve many aspects of a student’s prior academic career, such as their academic standing, extra curricular activities and work ethic. These are criteria that put everyone on the same level because everyone has the ability to work harder or join more athletics. However, no one can change the color of their skin, and colleges base their admissions on these variables as well. So racism, in a sense, affects even the most basic of human ideals, education. If all men are truly created equal, as it is written, then race should not matter. Why aren’t college admissions based solely on merit? No person should be given an advantage based solely on the color of his or her skin.   Ã‚  Ã‚  Ã‚  Ã‚  Racism is the belief that one particular race is superior to another. Throughout history people have been persecuted or singled out because of the color of their skin, even in our own country. How can this be in a country that claims that all men are created equal? Racism is so much a part of American culture now that we have claims of reverse racism and programs implemented, such as affirmative action, not just to protect the rights of a different person but to further them along in life and to make things easier for them. When this country was founded, it was believed that people that were born with a different color skin were inferior to those with white skin. They were in fact enslaved before America was actually founded, and this treatment continued until the country was nearly a hundred years old. Since then African Americans and other races have been attempting to reach equality in this country. One such method has been through education. In America, intell igence for the most part is respected, just as much as hard work. College in this country is the epitome of both.   Ã‚  Ã‚  Ã‚  Ã‚  In the university setting young adults are pushed to their limits. Their intelligence is tested on a daily basis in many different ways. Some classes involve heavy writing and still others involve written exams as their form of grading. Work ethic is also pushed. Homework is assigned and the true student does these assignments to maintain th... ... Lomotey. The Racial Crisis in American Higher Education. Albany: State University of New York Press, 1991. Browne-Miller, Angela. Shameful Admissions. San Franscisco: Jossey Bass Inc., 1996. Kleiner, Carolyn. â€Å"Wanted: a whole rainbow of talent Colleges are vying for minority students.† U.S. News and World Report 18 Volume 129 Sep. 2000. Marcus, Amy Dockser. â€Å"Class struggle.† Money Volume 29 Oct. 2000. Meacham, Jon. â€Å"The new face of race† Newsweek Volume 136 Sep/ 18, 2000. Reisberg, Leo. â€Å"A professor’s controversial analysis of why black students are losing the race† The Chronicle of Higher Education Volume 46 11 Aug. 2000. Selingo, Jeffrey. Florida’s universities see rise in minority enrollment after end of racial preferences.† The Chronicle of Higher Education Volume 47 8 Sep. 2000. Pages 1-3. Walsh, Laurie A. et al. â€Å"Affirmative action in American higher education and the goal of diversity in physical therapy programs† Journal of Physical Therapy Volume 14 Spring 2000.   Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  

Reconstruction after the civil war

After much trial and tribulation that our exasperated country has faced, we all still gather here today in order to follow a long tradition of George Washington, a founding father and cherished president who gave and set precedent to all the new leaders who soon will follow the same path of presidency. A path followed by great accomplishments of the Grant administration, has helped to set a rolling future for the united States and now we will Improve upon the Grant administration using It as a stepping stone to once again unite the country.Now that the sure wind of war thin our country has prevailed we must continue to rebuild upon the accomplishments of the Grant Administration. We must rebuild within our trust with other human beings and rebuild within the large battered roads of this nation. Though much has been done in the last presidency, there is still ton more to accomplish. Likewise the efforts of before have helped me gain a foot on the task to better our united nation. Look ing back the last few years, already have we recovered from the tribulation of Civil War.We have started the healing process between the different races that were pitted against each other but now stand as brothers. The recent Call Rights Acts and the passing of the 1 5th Amendment have helped to guarantee and ensure the equal Civil Rights that all men will share and all able to be comprised under the glorious Constitution. Yet throughout the years we have also placed ourselves in the continued process of reconstruction in which we have rid the terrors of extremists groups but also have accomplished the first steps of reunion with the Southern states.Likewise, these efforts to heal the previous tension have been done to almost a full recovery. Many former rebels have been pardoned and owe the first steps to a unified country have put under way by the removal of many federal soldiers. The vanquishing of the post war tensions has been successful but now we must continue and move forwa rd. The reality is that all races much make the effort to live harmoniously with sympathy and empathy through the eyes of each individual.And through the government will the Constitutional rights of all men be upheld as shall the eradication of prejudice of others In order to keep this nation prosperous. In order to end the final lasting tensions of this era, we will make sure to eve the well waited autonomy of the last few southern states. We will make sure to relieve them of the pressure that federal troops have brought in the states of Louisiana and South Carolina. Through this progress we must also put in an investment to Americas' future in education.With support of the government it will be a priority to make sure education is available to everyone, for with this we can move forward and develop a bright future through the youth at the moment. Universal education and improvements in the intellectual and moral conductivity is the root to all prosperity. The interest to better so ciety Is In equality of both colored and white people, for the perseverance of everyone Is needed to make these new Improvements In equality and education. Again we have been In depression within our manufacturing and commercial Industries.For sure this will come to an end. In need we must comply that a papered currency Is unreliable and accustomed to fluctuate. Likewise the best way to back this is with a coin based currency where that I will keep as my honored predecessor, President Grant, who made sure to preserve the peace between us and foreign powers. If those countries that require aid need it, without disposition we will help in a peaceful and honorable way so we can create mutual understandings to the entire world[K] .Grieving once again to bring forward this nation I ask all of you: Farmers, lawyers, doctors, politicians, judges, and citizens to Join me in this movement to restore our country to the divine rights that we all share. To help in earnest efforts to rekindle th e unity we all share in order for every man no matter color to achieve the pursuit of happiness and without fail grasp the happiness that we all will share together.

Bin-IT User Guide

Introduction: The software on this CD provides a system to make wage slips and employee information leaflets for your employees at the Bin-IT workplace. This is a bespoke software which is tailor made for your use. There are on screen instructions for installing your software but this user guide will provide more information with in-detail instructions, troubleshooting help and a glossary. Instructions: Basic instructions to run the software: 1. Specify which folders you want to save the spreadsheet, wage slip and leaflet. Click the â€Å"Run† button which will automatically save the spreadsheet and both documents to your computer. 2. Once you have saved the files to your computer locate your spreadsheet. This will be the spreadsheet you use to calculate the wages of various employees in your Bin-IT company. The columns you'll want to change regularly are from G to M where the actual hours. You can also change the wages or job position if people are given promotions or something similar. 3. You will notice that when you enter a value out of the range in the hours worked (outside of the parameters 0 to 12) then an error message will appear telling you that you have entered an incorrect value. This is validation – this stops you from making typing errors when entering in data. 4. You can change the validation rules by selecting the values you wish to change by selecting the field you wish to change, going to Data > Validation and then changing the parameters accordingly. 5. Now the spreadsheet functions are sorted – we can move onto the mail merge functions. Mail merge allows you to automatically take the data from the spreadsheet and use it to make a wage slip and/or employee information leaflet. This software comes with the files already linked to each other therefore you don't need to actually link the spreadsheet with the other documents. 6. Open up the Pay Slip word document. Go to tools > letters and mailing > Mail Merge. This will open up the mail merge wizard. 7. What will be shown to you is a mail merge wizard showing you which spreadsheet is selected to be merged with the word document. You can edit the recipient list and change who you wish the Mail Merge to apply to. 8. Click Next twice to skip to Step 5 of 6 and there you can preview all your print outs for the pay slips. 9. Click Next again and you are on Step 6 of 6, print. Click print and choose which ones you which to print, or just leave it on All and click OK. Before printing – if there was anything you wanted to change on a one-time-basis with any of the employees' wage slips then you can click edit individual letters and change a specific thing for a specific wage slip. 10. When doing Mail Merge for the leaflets just do exactly the same thing but on Microsoft Publisher Troubleshooting * As stated in the instructions, you may receive an error message when trying to enter in data in some cells on the spreadsheet. This is because a validation rule has been set on the specific cell(s). Step 4 explains how to change the validation rules if they do not meet the criteria of some of your employees. * On Step 7, you may have a problem with the Microsoft Word document not being properly linked to the spreadsheet with your data in. In the event that this occurs, click ‘Select a different list'. From this use Explorer to find the spreadsheet file in the location you saved it, select it and then choose Sheet 1. Glossary Mail merge – Mail merge is a software function describing the production of multiple (and potentially large numbers of) documents from a single template form and a structured data source. This helps to create personalized letters and pre-addressed envelopes or mailing labels for mass mailings Data validation – In computer science, data validation is the process of ensuring that a program operates on clean, correct and useful data. It uses routines, often called â€Å"validation rules† or â€Å"check routines†, that check for correctness, meaningfulness, and security of data that are input to the system. Validation Rule – A Validation rule is a criterion used in the process of data validation, carried out after the data has been encoded onto an input medium and involves a data vet or validation program. Evaluation of User Guide I have tested my user guide by providing my system to others with no other instructions apart from the ones on the user guide. I asked whether there was anything missing or anything else that may help. One common criticism I got is that I didn't have any kind of contact information in case the User Guide did not provide enough information. I also got advice to specify a little more in the contents of what is actually on each page. I have taken on these criticisms and have created a re-evaluated User Guide, starting on the next page: Bin-IT System User Guide Contents: (Page) 1. Introduction – What is this software? 2. Instructions – Spreadsheet settings and functions 3. Instructions (continued) – Mail merge (Making the wage slip) 4. Troubleshooting & Glossary of Technical Terms 5. Contact Details – Phone, Fax & Email Introduction: The software on this CD provides a system to make wage slips and employee information leaflets for your employees at the Bin-IT workplace. This is a bespoke software which is tailor made for your use. There are on screen instructions for installing your software but this user guide will provide more information with in-detail instructions, troubleshooting help and a glossary. Instructions: Basic instructions to run the software: 1. Specify which folders you want to save the spreadsheet, wage slip and leaflet. Click the â€Å"Run† button which will automatically save the spreadsheet and both documents to your computer. 2. Once you have saved the files to your computer locate your spreadsheet. This will be the spreadsheet you use to calculate the wages of various employees in your Bin-IT company. The columns you'll want to change regularly are from G to M where the actual hours. You can also change the wages or job position if people are given promotions or something similar. 3. You will notice that when you enter a value out of the range in the hours worked (outside of the parameters 0 to 12) then an error message will appear telling you that you have entered an incorrect value. This is validation – this stops you from making typing errors when entering in data. 4. You can change the validation rules by selecting the values you wish to change by selecting the field you wish to change, going to Data > Validation and then changing the parameters accordingly. 5. Now the spreadsheet functions are sorted – we can move onto the mail merge functions. Mail merge allows you to automatically take the data from the spreadsheet and use it to make a wage slip and/or employee information leaflet. This software comes with the files already linked to each other therefore you don't need to actually link the spreadsheet with the other documents. 6. Open up the Pay Slip word document. Go to tools > letters and mailing > Mail Merge. This will open up the mail merge wizard. 7. What will be shown to you is a mail merge wizard showing you which spreadsheet is selected to be merged with the word document. You can edit the recipient list and change who you wish the Mail Merge to apply to. 8. Click Next twice to skip to Step 5 of 6 and there you can preview all your print outs for the pay slips. 9. Click Next again and you are on Step 6 of 6, print. Click print and choose which ones you which to print, or just leave it on All and click OK. Before printing – if there was anything you wanted to change on a one-time-basis with any of the employees' wage slips then you can click edit individual letters and change a specific thing for a specific wage slip. 10. When doing Mail Merge for the leaflets just do exactly the same thing but on Microsoft Publisher Troubleshooting * As stated in the instructions, you may receive an error message when trying to enter in data in some cells on the spreadsheet. This is because a validation rule has been set on the specific cell(s). Step 4 explains how to change the validation rules if they do not meet the criteria of some of your employees. * On Step 7, you may have a problem with the Microsoft Word document not being properly linked to the spreadsheet with your data in. In the event that this occurs, click ‘Select a different list'. From this use Explorer to find the spreadsheet file in the location you saved it, select it and then choose Sheet 1. Glossary Mail merge – Mail merge is a software function describing the production of multiple (and potentially large numbers of) documents from a single template form and a structured data source. This helps to create personalized letters and pre-addressed envelopes or mailing labels for mass mailings Data validation – In computer science, data validation is the process of ensuring that a program operates on clean, correct and useful data. It uses routines, often called â€Å"validation rules† or â€Å"check routines†, that check for correctness, meaningfulness, and security of data that are input to the system. Validation Rule – A Validation rule is a criterion used in the process of data validation, carried out after the data has been encoded onto an input medium and involves a data vet or validation program.

A group II metal hydroxide Essay

To find the identity of X(OH)2 (a group II metal hydroxide) by determining it’s solubility from a titration with 0.05 mol dm-3 HCL Theory:1. Titrations are the reaction between an acid solution with an alkali. In this reaction (called neutralization), the acid donates a proton (H+) to the alkali (base). When the two solutions are combined, the products made are salt and water. For example: 2HCl(aq) + X(OH)2 (aq) XCl2 (aq) + 2H2O (l) This shows the one of the products i.e. salt being XCl2 and water. So titration therefore helps to find the concentration for a solution of unknown concentration. This involves the controlled addition of a standard solution of known. Indicators are used to determine, at what stage has the solution reached the ‘equivalence point'(inflextion point). This means at which, does the number of moles base added equals the number of moles of acid present. i.e. pH 7 Titration of a strong Acid with a Strong Base: As shown in the graph, the pH goes up slowly from the start of the tiration to near the equivalence point. i.e (the beginning of the graph). At the equivalence point moles of acid equal mole of base, and the solution contains only water and salt from the cation of the base and the anion of the acid. i.e. the vertical part of the curve in the graph. At that point, a tiny amount of alkali casuses a sudden, big change in pH. i.e. neutralised. Also shown in the graph are methyl orange and phenolpthalein. These two are both indicators that are often used for acid-base titrations. They each change colour at different pH ranges. For a strong acid to strong alkali titration, either one of those indicators can be used. However for a strong acid/weak alkali only methyl orange will be used due to pH changing rapidly across the range for methyl orange. That is from low to high pH i.e. red to yellow respectively pH (3.3 to 4.4), but not for phenolpthalein. Weak acid/strong alkali, phenolpthalein is used, the pH changes rapidly in an alkali range. From high to low pH, that is from pink to colourless pH(10-8.3) respectively but not for methyl orange. However for a weak acid/ weak alkali titrations there’s no sharp pH change, so neither can work. Therefore in this investigation, the titration will be between a 0.05 mol dm-3 of HCl with X(OH)2, using phenolphthalein. Dependant Variable: Is the volume of HCl to achieve a colour change that is from pink to colourless. The Controlled variables : 1. the same source of HCl 2. same concentration of HCl 3. Same source of X(OH)2 4. Same volume of X(OH)2 5. Same equipment, method, room temperature Controlled Variables How to control How to monitor 1. Same source of HCl Using the same batch of HCl or from the same brand will control this. If the concentration was not to be same throughout, then this will cause different ratios of the components of the solution, that might cause different volume of HCl to be obtained for the neutralization to occur. 2. Same concentration of HCl This will be controlled by using the same batch of HCl and from the same source i.e. the same brand. By using the same batch ensures that the reactant concentration is the same. If another batch were to be used causes the concentration to differ. This causes the HCl obtained to be different. 3.Same source of X(OH)2 Using the same batch of X(OH)2 or from the same brand will control this. If the concentration was not to be same throughout, then this will cause different ratios of the components of the solution that might cause different volume of HCl to be obtained for the neutralization to occur. 4. Same volume of X(OH)2 This will be controlled by using the same batch of X(OH)2 and from the same source i.e. the same brand. By using the same batch ensures that the reactant concentration is the same. If another batch were to be used causes the concentration to differ. This causes the HCl obtained to be different. 5. Same equipment, method, room temperature The method would be kept the same and the same set of equipment and brand will need to be used throughout. The room temperature will be kept throughout at 180C by using a water bath. If different equipment or brands were used then there would be a lot of anomalies in the experiment causing a huge amount of inaccuracy of measurement particularly. Results: Raw data results were collected by using 25.00 cm3 of X(OH)2 with phenolphthalein and the volume of HCl was obtained by the solution going from pink to colourless. The volume of HCl found in 50.0cm3 burette à ¯Ã‚ ¿Ã‚ ½ 0.05 cm3 Trial 1 Trial 2 Trial 3 Trial 4 Average 19.600 19.800 19.600 19.700 19.675 Qualitative results that occurred during the experiment: * Conical flask swirling not even between the trials * Difficult to judge ‘colourless’ solution change – subjective end point * Ability to measure 25cm3 * Filling of burette accurately with HCl – 0 point in right spot * Residual distilled water or solutions remain in conical flask i.e. diluted/interfered with subsequent solutions of X(OH)2 Average = trials (1+2+3+4)/4 Therefore: (19.6 + 19.8 + 19.6 + 19.7)/4 = 98.5/4 = 19.675 Due to the equation being 2HCl(aq) + X(OH)2 (aq) XCl2 (aq) + 2H2O (l) Therefore the ratio is 2:1 of 2 HCl : 1 X(OH)2 So using the equations mentioned above: Moles of acid is the number of moles= concentration X volume i.e. the volume will be used from the average Therefore: =0.05mol/dm3 x 19.675 cm3 =19.6 cm3 / 1000 = 0.0196 dm3 =0.05mol/dm3x0.0196 dm3 = 0.00098 moles So Moles of alkali in 25.000 cm3 Moles of HCl / 25.000 cm3 due to the ratio being 2:1, therefore 0.00098/2= 0.00049 moles of HCl So now the ratio is 1:1 so 0.00049 moles of X(OH)2 Moles of alkali in 100 cm3 It is assumed that there are four lots of 25 cm3 = 4 x 0.00049 = 0.00196 moles The next series of results will be used to calculate solubility of each compound by their mass in 100 cm3 The total Mr has been calculated in the table below for each compound. This was done by : Mr of X + ((O + H) X 2). Each element Mr for the following elements (OH)2 Total Mr Be 9.010 (16.00 +1.01) X 2 = 34.020 43.030 Mg 24.310 (16.00 +1.01) X 2 = 34.020 58.330 Ca 40.080 (16.00 +1.01) X 2 = 34.020 74.100 Sr 87.620 (16.00 +1.01) X 2 = 34.020 121.640 Ba 137.340 (16.00 +1.01) X 2 = 34.020 171.360 To obtain the solubility’s of metal II hydroxides is moles X Mr of the compound Therefore this table shows the calculation for the solubility’s for each of the different compounds Each element Total Mr Moles of X(OH)2 Solubiltity given as g/100 cm3 Literature values of the compounds given as g/100 cm3 Be(OH)2 43.03 0.00196 0.0843 0.000 Mg(OH)2 58.33 0.00196 0.114 0.001 Ca(OH)2 74.10 0.00196 0.0145 0.170 Sr(OH)2 121.64 0.00196 0.0238 0.770 Ba(OH)2 171.36 0.00196 0.335 3.700 Uncertainties: The uncertainty in measurement: Uncertainty due to pipette of 25.000 cm3 : Volume of X(OH)2 = à ¯Ã‚ ¿Ã‚ ½ 0.100 cm3 Percentage uncertainty = (0.1/25) X 100 = 0.400% Uncertainty due to Burrette of 50.000 cm3: Assumed due to measured volume of 19.675 cm3 and the uncertainty due to the smallest unit of measurement being 0.1 cm3 Therefore 0.1/2= à ¯Ã‚ ¿Ã‚ ½ 0.050 cm3 Percentage uncertainty = (0.05 /19.675) X 100 = 0.254% Therefore total uncertainty = 0.400% + 0.254% = 0.654% Conclusion and Evaluation: X(OH)2 is most likely to be Ca(OH)2 as the calculated solubility is closest to the literature value given of Ca(OH)2. The solubility for Ca(OH)2 0.145 g/100 cm3 and the literature value is 0.170 g/100 cm3. This shows that the difference is only 0.025 cm3. However the comparison between Be(OH)2 of the calculated solubility is 0.0843 g/100 cm3 and of it’s literature value 0.000 g/100 cm3 . Shows that there is a greater difference. Showing that it cannot be X(OH)2 solution. This is also shown for Mg(OH)2 as the difference between the calculated solubility and the literature value is 0.113 g/100 cm3, showing that it still has a greater difference than Calcium hydroxide does. The difference between Sr(OH)2 and it’s literature value is 0.532g/100 cm3. However the difference between the calculated solubility of Barium hydroxide and the literature value is 3.365 g/100 cm3 showing there is a great difference so it cannot be Barium hydroxide. The percentage error of Ca(OH)2 = [(0.170 – 0.145)/0.170] X 100 = (0.025/0.170) X 100 = 14.705% Throughout the experiment there were systematic errors and random errors that were met. Uncertainties/limitations Error Type of error Quantity of error Explanation for error Improvements Measurement in burette Systematic error +/- 0.05cm3 Equipment limitation, this is because the line where each of the reading might not be precise. Different manufacturer should be used with multiple trials in order to increase the accuracy of the calculated value to the literature value. Measurement in pipette Systematic error +/-0.1cm3 Equipment limitation, this is because due to the pipette only holding 25 cm3 of volume. The line could have been where the actual reading might not be Causing the result to not be precise. Different manufacturer should be used with multiple trials in order to increase the accuracy of the calculated value to the literature value. Point of colour change Random error Not quantifiable Human observation – subjective measurement. This is because even though a white tile is used, it is unclear as to what point has the solution gone colourless. Use alternative indicator for several different trials, use pH meter to assess neutralization point. Therefore there will be a more precise point as to when the solution becomes green. Temperature fluctuations Random error Not quantifiable There can be a change of measurements of equipment due to variation in expansion and contraction of materials. Due to the temperatures not being constant from the fan, windows or from the air conditioner. Controlled lab environment of the temperature by using a water bath at 180C with no air conditioner, fans working. To ensure no fluctuations occur. Fluctuations in humidity of room Random error Not quantifiable Change solution concentrations due to differences in evaporation rate in the surrounding air. Controlled lab environment Calibration error in burette Systematic error Not quantifiable 0 line incorrectly marked Divisions on burette inaccurate Use different manufacturer’s equipment for other trials Calibration error in pipette Systematic error Not quantifiable 25cm3 line incorrectly marked. Because it is unclear as to where the true meniscus lies. Causing the values measured out to be not precise. Also due to there being only one line causes a further decrease in the precision of the results. Use different manufacturer’s equipment for other trials to ensure that the accuracy increases. Another improvement that will be done, if the experiment were to be repeated is that due to the inaccuracy of the conical flask being swirled. If the conical flask is being swirled unevenly there is a chance of inaccurate results of when the colourless solution occurs. Therefore a stirring rod should be used to increase the accuracy of the swirls of the reaction in the conical flask. Another limitation that arouse in this experiment that would be improved if the experiment were to be done again is that after the neutralization reaction had occurred, there would still be some residue of the distilled water used to rinse out the equipment. This can be improved by increase the number of repeats of rinse. This would ensure that more of the diluted solution would have been removed. Also the trials can also increase, to 10 repeats so that there is more variance so that the accuracy increases. Another improvement might be, to use different indicator, for example methyl orange. Due to the colour change would be from red to yellow would make it easier for the pH 7 to be more easily recognized against a white tile then it was with phenolphthalein. Cited Sources: 1. http://www.vigoschools.org/~mmc3/c1%20lecture/Chemistry%201-2/Lecture%20Notes/Unit%205%20-%20Acids%20and%20Titration/L3%20-%20Acid-Base%20Reactions%20and%20Titration.pdf

Interrelationship between at least two problems Essay

The economy of a state is very important and connected to many things in the life of each and every person. This paper will show that the economics of California affects the education and the immigrants in California. These three things are connected because both education and many things about immigration need money and money is a part of the economy. One of the things that connects the economy with education is Proposition 13 and government budgets. What connects the economy to immigration issues is their contribution to the economy and also their status as workers in the country. Proposition 13 was a move to limit property taxes by voters in 1978 and increased taxes in other places such as income and sales taxes for schools and other local and state programs. Instead, those who benefited a lot from Proposition 13 was large corporations and businesses. If this is what is happening to schools, then it will have a direct bad effect to the education system. It means that education will be more expensive for people especially in the private schools they are enrolling in. Also, the proposition makes it obvious that the government will lack sources of funds because the properties are not taxed. There are big taxes coming from properties, especially businesses, which is why they have less sources of taxes. This means that there is less revenue for the government. Less revenues means less money given to a lot of things that the government has to fund. This includes the money that the government gives to public schools and community colleges because the government lacks budget especially to make the schools better for the students. The smaller budget also creates another problem because school staff could be laid off, smaller classrooms because of more students coming in, putting schools to closure, and cutting school programs that will help many students such as sports, music, and art programs. Because of this, students will have problems becoming better and focusing on their lessons and the things that they have to learn. If it goes really bad, then it will be no different from the poorly-funded education of less prominent nations. Like other poorer nations, students will have very difficult time to pay attention to the teachers which will make their grades lower and decrease the number of graduates. This means that there will be more students who drop out and become juvenile delinquents. Also, teachers who are talented will be lost because the benefits are not good anymore and because some of them will be laid off. In terms of connecting the problems of California government economic and education system, the lower budget for schools affects the immigrants badly. In California, there are 600,000 ethnic minority colleges who rely on government funding. The budget cuts have resulted in less spending per student in important subjects especially in learning English. Because the government spends less money for them, minorities who rely on community college for their education will fall further behind. This will be bad especially because Latinos are becoming a bigger population and are easily growing to soon become the majority of the state and have the characteristic of being less educated. In the end, a less educated population will also mean that things will go bad for the economy also. Because businesses and the economy relies on a competent and able workforce, they need to have quality people working in businesses, institution and even in the government. It’s bad enough that students learn less from community colleges but it’s even worse that there are students who can’t even go to community colleges because of the lack of funding provided to the schools. The state seems to be even scarier especially because the types of jobs that California needs are skilled and need specialized training in college like in health care, education, technology and construction work. The California economy also has a direct effect on immigrants that isn’t coursed through education. We already know that immigrants contribute to the economy by paying taxes, starting a business, and being a good source of labor for companies and businesses. Because of the current good economy of California, many immigrants, both documented and undocumented, are coming in to get better paying jobs than in their home countries and helping the economy grow. The current economy of the state also helps immigrants have better lives than what they have in their third world nations. The economy also helps the immigrants raise their families either in the United States or in their home countries especially when they send money to them. If the economy of California goes down, then a lot of immigrants will lose jobs and will not be able to support their families. Many immigrants will also not have a better life. It’s very obvious that immigrants are an important aspect of the California economy. The government should take care of them and not shun them. If the immigrants are treated well by the economy, then they will help make the economy more prosperous and it will produce a cycle of improvement in the whole state. All in all, the economy of California will affect both the state of education and the state of the immigrants in a directly proportional way and vice versa. If the economy goes down, the system of education will also go down. If the economy goes down, the effect on the immigrants will be negative. If education goes down, the economy and the plight of immigrants will be worse. If the state of the immigrants become worse, it will affect the economy and the quality of education as well. This means that all of these three factors are linked together and a difference in one will affect the others.