Experiment 4 Composition of a Post-1983 Penny Lab Report Background: Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. The experiment will be using HCl a strong acid to dissolve all the zinc inside the outer copper shell. The reaction follows as such; Zn+2HCLZnCl2+H2‚ but there will be no reaction with copper. The portion that will be measured is the mass of copper left after all of the Zn goes through
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Fall 2011 Title: Project 5: SPECTROPHOTOMETRIC ANALYSIS OF A PENNY Date Run: 04/03/2012 Date Submitted: 04/15/2012 Grade: _____________________ Objectives: The purpose of this experiment is to use spectrophotometry to determine the percentage of copper in a copper-clad penny‚ and to determine the thickness of copper layer on the copper-clad penny. Introduction: In the spectrophotometric analysis of a penny lab‚ we will be conducting three experiments. The purpose of the first
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investment for your home’s value and family’s enjoyment and a professional pool cleaning service Frisco can help you clean and protect this investment. If you are planning lazy days relaxing or exciting parties by the pool this summer‚ consider hiring the professionals to prepare your pool for this upcoming season. Cleaning 101 As a homeowner‚ you are probably not familiar with the proper way to clean your pool. However‚ cleaning your pool before using it this summer is imperative for your health and safety
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Penny Press Until the early 1800’s‚ newspapers in England and America were expensive and therefore exclusive to the wealthy and literate minority. On average‚ newspapers would cost around six cents per issue and were usually sold through subscription only. Readers would have to pay for a years’ worth of newspapers when first signing up for a subscription‚ and that cost could be a middle-class worker’s week’s wage. Most people could not afford newspapers and therefore could not receive daily news
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Cleaning house is often looked upon as a boring chore. One that is usually pushed upon the women of the house. Most people hate cleaning‚ and will do anything to get out of it. My brother‚ for example‚ will waste more time and energy trying to avoid a chore than it takes to do the chore its self. Many people dislike cleaning house because its time consuming‚ the chemicals give off strong odder‚ and they often feel overwhelmed by the clutter. The best way to cut back on time consuming chores is
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coins or more specifically‚ pennies.. We bustle around cities and schools and workplaces‚ fishing for cash to purchase a much-needed coffee or snack. Upon arriving to the cash register‚ we scramble into our wallets for a few pennies to reach the exact price value of our item. This has become a mindless habit‚ but some people have grown tired of the time wasted by penny-pinchers. However‚ these grumpy customers fail to recognize the depth
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Flowchart For A Process: Cleaning Kennels Helen Laughland- Penland OPS/571 February 4‚ 2013 John Quesnel Daily Kennel Cleaning Fostering rescue cats can be a challenge to say the least. Accepting more than one at a time is even more difficult to manage; however when the need is there‚ I do respond if possible. My three foster cats were rescued from a dumpster outside a hotel. Subsequent to capturing‚ getting them vaccines and spaying and neutering them they became a part of my daily life
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Penny Siopis is a South African Visual Artist that focuses on the hardships that people go through in her art and she tries to understand different people by putting herself in their shoes when she works on a particular artwork. I have chosen her for my essay as she is an inspirational artist that looks at art from a unique and honest point of view . Penny Siopis was born in 1953 in the small town of Vryburg in the Northern Cape Province. She studied Fine Arts at Rhodes University and Portsmouth
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[pic] Arab Academy for Science and Technology and Maritime Transport Graduate School of Business Human Resource Management Take Home Final Exam (40 Marks) Dr. Mohamed Taher A) Essay Questions: (Please answer the questions following this introduction making use of appropriate academic theory along with applications): (24 Marks): “Training focuses on improving employee performance on one’s current job. Development helps to prepare an employee for other or future positions
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Pennies may have been useful several years ago; however‚ now they are inconvenient and obsolete. As an American citizen who pays with U.S. currency almost every day and almost every day‚ inconvenienced by the use of pennies. Pennies make even less sense provided the fact that the United States Government has made such a large amount of pennies that the materials used to make pennies are worth more than a penny itself. Other countries have already done this and it is working out well for them‚ therefore
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