Determination of % Composition of Pennies Using Redox and Double Displacement (Precipitation) Reactions Introduction: Oxidation involves the gain of electrons of hydrogen or the loss of oxygen or decrease in oxidation state. If zinc completely reacts with HCL‚ then the theoretical yield of copper should be equivalent to the actual yield. Purpose: In this lab‚ we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc
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How JC Penny and Kohl’s Use Facebook in their Marketing Plan Introduction In today’s society we are dependent on social media for information. Social media gives us a feeling of being connected‚ even when we don’t even know the person we are reading about. The information passed through Facebook‚ LinkedIn‚ YouTube‚ MySpace comes to us uncensored and can evolve rather quickly. Many companies use tools like Facebook‚ to reach their customers. People are on Facebook twenty
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determine if the claims made by the US government‚ regarding the spectrophotometric analysis of a copper penny hold true. Before 1982‚ the Lincoln cent contained 95% copper and 5% various mixtures of zinc and tin. As the cost of copper increased‚ the cost to produce the penny was more than the actual face value of the penny. This caused the US government to change the composition of the penny. The pennies we know today consist of a copper coating‚ which contains mostly zinc metal‚ and has a 2.5% mass.
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Pennies are easily spent and worth one cent‚ so if I was you I wouldn’t let that precious penny walk out of my life. Pennies are very expensive to produce. We have spent over eighty million dollars over the production of pennies‚ while pennies are only worth one cent. Even though some people want to get rid of the penny‚ it would be better if we keep it because it is apart of or culture. Also‚ we could avoid price increases from rounding up‚ and pennies are good for charities. Many people have
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States should keep the penny or stop the production and distribution of it. My claim is yes‚ we should stop the production of the penny. My reasons being that pennies are a waste of space(Jeff Sommer)‚ it costs more to produce them than what they are worth(Jeff Sommer)‚ and with pennies gone‚ retail sales will be rounded up or down(Jeff Sommer). The counterclaim is that we should not stop the production and distribution of the penny. Some people say no to doing away with the penny for the following
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Schedule of Lectures for Theology 151:Christian Commitment Requirements and Grading System 1. Class Standing ( 4-5 Quizzes) 20% 2. Two Term Papers 10% 3. Mid-term (Oral) 30% 4. Final Oral Exam 40% =100% A 93-100 master of the subject‚ insights from the perspective of the whole book B+ 87-92 clear answers‚ correct answer and some insights from the books B 83-86 right answers but mainly taken from the lectures C+ 79-82 low understanding and doubtful of their answer C 75-78 vague
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the brave‚ fast thinking hero’s. The show’s main female character‚ Penny‚ is sexualized and objectified throughout the series. The show focuses solely on her social capabilities and how she physically looks. Penny is merely on the show to be a sex object. The Big Bang Theory also exemplifies the stereotype that women cannot be both intelligent and sexual. The men on the show are science geniuses who are continuously rescuing Penny from her irresponsible lifestyle. The show also discusses how all the
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Francine Penny Patterson was born in Chicago‚ Illinois in February 13‚ 1947. She is the second oldest of seven children‚ her parents were C.H. Patterson and Frances Spano Patterson. Since she was little she felt attracted for animals and nature. In 1970 she got her bachelor’s degree in psychology at the University of Illinois at Urbana Champaign‚ two years later‚ she earned her Ph.D. in Developmental Psychology from Stanford University. Since then she started her long journey along with the
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Scope Statement Ans:-The project in the case study is for ‘Grabbit and Scarper & Sons Limited’ that has appointed Penny Black to join the team and in the first instance‚ to take over responsibility for the project management of a special project in the North East‚ with a view to then managing a new plant in the USA within the next 5 years. In the project Penny Black has to look for upgrade of plant that includes physical assets‚ mainly pumps and compressors and complete in 6 months An
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Gold is a soft metal that is largely unreactive. Gold jewellery can lie underground for thousands of years and emerge shiny after that lengthy exposure to air‚ water‚ and other chemicals in the environment. Gold does dissolve in some solvents as indicated below and does react with halogens. The most common oxidation states of gold are Au(I) and Au(III) but there are a few examples of Au(V) (various anions [AuF6]- and [Au2F10]). The Au(III) ion has the d8configuration which gives rise to many square
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