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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The two essays I chose for my final portfolio were Maira Kalman’s “Back to the Land” interpretive essay and Josh Neufled “A.D. New Orleans After the Deluge” interpretive essay. I found it quite easy when it came to deciding which two interpretive essays I would have to choose for evaluation because I was able to analyze both the purpose and audience clearly in the two essays. Also‚ with both Kalman and Neufeld’s essays I received positive responses‚ and felt that I could confidently write about both
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Amna Chowdhrey Ms. Thoromon English/4 27 September 2012 Chapter 4-6 Quotes | Analysis | P:66-67 “There is a sympathy that will make me conscious of him. I shall see him tremble. I shall feel myself shudder‚ suddenly and unawares. Sooner or later‚ he must needs be mine: | Hester’s husband wants to know who the man is and he wanted revenge on him. This shows how much he still cares about Hester. Even though he did leave her for 2 years because he got captured by the Native Americans‚ he
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In my first round‚ I have read the case‚ looked at the available information and applied the BSSE and MI theories to understand what was happening in the market and how I should act. I assumed that the high growth potential market was for the innovative product and I expected the core business to decline over time. I started heavily investing in bringing the new product up to the demanded quality. Then I started losing the core business and missing my sales targets. I got fired. I couldn’t believe
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B: Back to School They say that education is the most important thing for society. That education is the way out of trouble‚ poverty‚ unemployment and many other things. But all of this is hard to understand for children‚ and that is a problem‚ for it is them who are in the education system. So how do you get kids and youngsters to understand the importance of education and hard work? That is what Barrack Obama – the president of the United States of America – has tried to do. He gave the speech
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April 4‚ 2013 Period 5 Carvalho On the Want of Money It all dates back to ten thousand years ago when money became one of the world’s greatest obsessions. From bartering to coinage to paper‚ the want and need for money has never changed. In author William Hazlitt’s essay‚ On the Want of Money‚ he clearly describes how money can effectively make or break one’s life. He uses examples‚ syntax‚ diction‚ and tone to show that in a world without money a human being will experience the harshness of life
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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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Back to the Future Start point: SIP- Stop‚ Introspect and Proceed Every bread winner in a family will strive to earn enough for the present life and yearn to plan for the future. He is pre-occupied with so many priorities in life that he loses the count of the pending issues. In such a myriad situation‚ he wonders how much I should save and for how long? He cannot distinguish between his savings and might have multiple goals. Present day man is not a Spielberg to keep travelling in the time
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As parents around the country purchase new pencils and backpacks‚ they may be surprised to learn “nature” is one more thing they should put on the back-to-school supply list. According to a new report by National Wildlife Federation‚ Back to School: Back Outside‚ time spent outdoors both during school and at home helps children become high-performance learners and score higher on standard tests. Unfortunately‚ American children spend only minutes a day playing and learning outdoors which presents
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about that money is an important thing in our life. Every individual were looking for the convenience of the financial position. To achieve this‚ there must be a system of financial plannig or effective use of financial system so that expenses can be managed. Reflect the future financial management efforts that involve specific disciplines to managed income source and assets that each expenditure made or benefits availed optimal and can allow saving and investments that can guarantee income in the
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