Chris Goodman Essay Assignment #2: Explanatory Synthesis Explanatory Synthesis of Childhood Obesity Childhood obesity is a major problem in the United States. There are multiple reasons for this problem including the child’s school system‚ the access to technology in young children and the child’s genes. It is sometimes inevitable for a child to be obese due to their genes. There are some precautions being made to help this problem. Some might work but others might fail. Childhood obesity
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CHEMISTRY 101.1 Intermediate Chemistry Laboratory I Institute of Chemistry University of the Philippines‚ Diliman I. Synthesis of Salicylic Acid Purpose: Part I of the experiment illustrates the base hydrolysis of an ester‚ methyl salicylate‚ to form salicylic acid through nucleophilic acyl substitution. Procedure: Dissolve 12 g NaOH in 70 mL water in a 150 mL round bottom flask. Add 5.0 mL methyl salicylate and reflux the reaction mixture at its boiling point for 15 minutes using a stirrer
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1.TITLE: To prepare isopentyl acetate (isoamyl acetate) 2. AIM: To make an ester referred to as banana oil from acetic acid and isopentyl alcohol 3.THEORY: This ester is often referred to as banana oil‚ since it has the familiar odor of this fruit O O CH3 H+ CH3 CH3C OH +
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Eq 1 Limiting reactant = Benzoin Theoretical yield of Benzil: Eq 2 Theoretical Yield Benzil | 0.296 g | Mass of Crude Benzil | 0.188 g | Mass of Final Benzil | 0.127 g | % Yield | 43% | % Recovery | 66% | Table 1: Mass of crude/final Benzil‚ % yield‚ and % recovery Percent Yield: % Yield = (Final product/Theoretical product) x 100 Eq 3 = (0.127 g/0.296 g) x 100 = 43% yield Percent Recovery % Recovery = (Final product/Crude product)
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The Living Yield Curve at SmartMoney.com More SEARCH Search or Quote Sunday March 15‚ 2009 9:44 PM ET HOME INVESTING SPENDING PERSONAL FINANCE TOOLS PORTFOLIO Login | Register | Help | Select FINANCIAL Bonds BIZ | Economy HELPLINE: | ETFs Have | Market a question Update |for Mutual SmartMoney? Funds | Short Email Termask@smartmoney.com Investing | Stocks or call us toll-free at 866-219-0687. SMALL BONDS Published September 29‚ 2000 | A AA MARKETS MY QUOTES MOST ACTIVE Index Price
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Percent By Mass Solution Problems 1. What is the percent by mass of a solution made by dissolving 0.49 g of potassium sulfate in 12.70 g of water? 2. What is the percentage concentration of 75.0 g of ethanol dissolved in 500.0 g of water? 3. A chemist dissolves 3.50 g of potassium iodate and 6.23 g of potassium hydroxide in 805.05 g of water. What is the percentage concentration of each solute in the solution? 4. A student wants to make a 5.00 % solution of rubidium chloride
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Gabrielle Simard-Moore 11.5 Paradox of Safe Yield Safe yield was originally defined as the amount of water that could be developed from a ground water reservoir without depletion of its reserves. Over time the definition has changed as economics‚ protection of ground water‚ and environmental affects have been considered in this concept as well. So‚ safe yield is now defined as the amount of naturally occurring ground water that can be taken from an aquifer on a regular basis‚ economically and
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g 0.01 591 1663 2.1 Ethanol R11‚ S2‚ S7‚ S16 46.07 2 ml n/a 158.8 351.6 0.789 Dibenzalacetone n/a 234 g/mol n/a n/a 379 unknown unknown Theoretical Yield: Limiting reagent: acetone (0.004 mol) Presuming 100 % of limiting agent makes dibenzalacetone Dibenzalacetone (100% yield) = 0.004 mol * 234 g/mol = 0.936 gram The theoretical yield of dibenzalacetone is 0.936 gram Procedures: In a 50 ml conical flask sodium hydroxide (0.4g‚ 0.01 mol)‚ distilled water (2 ml) and ethanol (2ml‚ 95%)
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options on a stock paying a dividend yield‚ we know how to value options on stock indices and currencies.” Explain this statement. 3. Explain how corporations can use range-forward contracts to hedge their foreign exchange risk. 4. Calculate the value of a three-month at-the-money European call option on a stock index when the index is at 250‚ the risk-free interest rate is 10% per annum‚ the volatility of the index is 18% per annum‚ and the dividend yield on the index is 3% per annum. 5. Calculate
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Introduction: The purpose of this lab was to learn how to use salicylic acid to make aspirin. Aspirin is the most widely used over-the-counter drug in the world. The average tablet contains about 325 milligrams of acetylsalicylic acid with an inert binding material such as starch. Aspirin is used to relieve pain‚ reduce inflammation‚ and lower fever. Aspirin originally was derived by boiling the bark of the white willow tree. Although the salicin in willow bark has analgesic properties‚ purified
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