EXPERIMENT 4: BACK TITRATION CONTENT NO. CONTENT PAGE 1. Synopsis 3 2. Introduction 3 3. Theory 4 4. Procedure 4 5. Results and Calculations 5 – 6 6. Discussion 7 7. Conclusion 7 8. References 8 1. SYNOPSIS The purpose of this experiment is to use the back titration method to determine the percentage of calcium carbonate in toothpaste. Instead of using standard titration methods where an acid is titrated directly using a standard solution of a base‚ back titration is used because
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Down syndrome Down syndrome is one of the most common genetic disorders‚ occurring one in every 600 births (Davis‚ 2008). 3‚500-5‚000 children are born with Down syndrome every year in the United States alone (Pueschel‚ 2008). Down syndrome or mongolism was first identified by John Langdon Down in 1866 although the syndrome has been around for many centuries. In fact‚ according to many paintings dated back to the sixteenth century show pictures of children with Down syndrome like features (Carr
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Back to School: Education is very important. It determines what you can do in life. It concludes who you will become. President Barack Obama believes that education is vital and his domestic policy is still focused on education. Why does Barack Obama believe that education is so important to the United States? Why does Obama think education will make the U.S. more competitive? President Barack Obama addresses the target audience directly. The target audience is the students from kindergarten
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Historical Movie Review Assignment: Black Hawk Down The Battle of Mogadishu‚ also known as “Black Hawk Down occurred during the Somalia Civil War in Mogadishu‚ Somalia. According to Battersby‚ Paul‚ Somalia’s President was overthrown by rebel groups from his own country. The country was divided by different groups that were all fighting to gain political control. (2009) One of the assemblies‚ led by Mohamed Farrah Aidid‚ was called the United Somali Congress. In late 1991‚ conflict continued in
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Back to School In a world where the all the countries compete with each other all the time‚ it’s important for every country to make sure that the future adults are well educated and capable of participating in this competition. In the speech ‘Back to School’ Barack Obama encourages the young people of America to get an education and work hard in order to continue America’s history of success. Obama’s speech is addressed to the young people of America. He speaks directly to a bunch of young
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Down Range is a book by Dick Couch‚ a former Navy Seal. He tells about how he became a navy seal and his experiences. He also writes about other missions that he was not even in‚ including missions by the famous American sniper‚ Chris Kyle‚ who is the world’s most deadly sniper. The motive of a Navy Seal is to be the best gunman in the world‚ plus being stealthy‚ effective‚ professional‚ and lethal. Dick Couch did this and he was on the battlefield. Couch was in the Navy seals in the 1980’s
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Synopsis The objective of this experiment is to determine the percentage by mass of calcium carbonate‚CaCO3 in toothpaste using back titration technique. A known weight portion of toothpaste is obtained to react with known volume and concentration of standard acid solution. After completing the reaction‚ the resulting solution containing excess acid is back titrated with known volume and concentration of standard base solution. Determination of excess acid after reaction allow us to calculate the
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Lee 1 Lee Andrew Pamela Gressier English 105 May 23rd‚ 2014 There And Back Again Growing up‚ one of my most favorite places to go as a child was the jungle gym at Wardlow Park. I was always fascinated with the jungle gyms and park‚ and always made it my daily personal mission to go as much as I could. However‚ the Wardlow Park is vastly different now then it was back when I was a little kid. From the environment to the current inhabitants‚ almost every aspect of the park has changed. When
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Never To Forget- The meaning of the title "Never To Forget" is very significant to the story of the Holocaust. The title simply means to forget what we know would not be human. It is very important that we never forget the Five Million Jews that lost their homes‚ property‚ freedom‚ dignity‚ and finally‚ their lives. We must always remember what happened to the Jews. Every time someone thinks of saying or doing something to a fellow human being we must remember the Holocaust. We must never
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the open display of unhappiness from Elizabeth who suspects that her husband has resumed the relationship with Abigail Williams. The couple’s conflict is first shown in the stifling atmosphere at home when they are talking after John comes back from Parris’ house. Even at the beginning of their conversation we can feel the uneasy feeling and discomfort of the couples‚ as shown by the stage directions‚ Procter “gets up‚ goes to her‚ kisses her”‚ an action showing his love and effort to please
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