anhydride:! ! theoretical yield:! ! ! ! ! ! ! ! ! ! ! ! ! ! 1.5278g 4.4mL 1.7mL 2.1173g acetaminophen actual yield:! ! ! ! ! ! percentage yield crude acetaminophen:! ! 1.3403g 63.3% Decolorization of crude acetaminophen The color is now a very pale brown/pink and the crystals have a shimmery look to them‚ they are still very distinct crystals. weight sodium dithionite:! ! ! water:!! ! ! ! ! weight of purified acetaminophen:!! ! ! ! 2.0213g 15mL 0.90218g Yield Calculation and Melting-Point
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Experiment 23: Synthesis of an Alkene April 5‚ 2013 Purpose: Results and Discussion The weight of our n-Butyl Bromide sample (actual yield) was 0.09g. The percent yield was found to be 4.38%. Only 0.09g of the theoretical 2.055g yield was obtained. The boiling point was 104° C‚ which is higher than the literature value of 101° C. This is due to the sample being somewhat impure‚ as impurities tend to increase boiling point. When IR spectroscopy was performed‚ there were no OH stretches
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The purpose of this experiment is to use stoichiometry to predict how much of a product will be made in a precipitation reaction‚ to measure the reactants and products of the reaction correctly‚ to figure out the actual yield vs. the theoretical yield and to calculate the percent yield. Procedure First‚ 1.0 g of CaCl2·2H2O was put into a 100-mL beaker and 25 mL of distilled water was added. The two ingredients were stirred to create a calcium chloride solution. Then‚ stoichiometry was used to
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Lab #3: Stoichiometry of a Precipitation Reaction October 14‚ 2014 Abstract: The purpose of the lab‚ Stoichiometry of a Precipitation Reaction‚ is to be able to calculate the amount of a second reactant we need to react with the reactant one. You must calculate the amount of the second reactant using stoichiometry to figure out what amount is needed. After the amount is calculated‚ you then can add it to the first reactant and it will give you a full reaction. To figure out what you
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com/mdc/public/page/2_3020-treasury.html?mod=topnav_2_3000 and find out the ask/bid price quotes and asked yields for treasury bills (1) maturing on 2009/09/24‚ traded on 2008/09/24 Bid = 1.845 Ask = 1.835 Asked yield = 1.887 (2) maturing on 2010/09/23‚ traded on 2009/09/24 Bid = 0.385 Ask = 0.378 Asked yield = 0.384 (3) maturing on 2011/09/22‚ traded on 2010/09/24 Bid = .250 Ask = .245 Asked yield = .249 2. Calculate the ask prices for the above three T-bills using bank discount method. (1)
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involving filtration‚ sedimentation‚ decantation and extraction. While different reaction were also observe and tallied until the recovered copper was weight and the percentage yield was calculated from the formula: Percentage Yield = Mass of recovered copper/ actual yield mass of copper wire(Theoretical yield) X 100 The Percentage Yield of the experiment was 87.63% INTRODUCTION All chemicals reactions occurring within test tube‚ industrial reactors‚ or nature‚ can be described by reaction equations
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Mass of filter paper and dry calcium carbonate __1.8__g Net mass of the dry calcium carbonate __.8__g (This is the actual yield) Step 11: Show the calculation of the theoretical yield of calcium carbonate. .0068 mol of CaCO3 *100.06 g CaCO3/1mol of CaCO3 =.6804 g of CaCO3 Show the calculation of the percent yield. (Actual yield/theoretical yield)*100 = (.8/.68)*100 =117% Conclusion: The primary objectives of this experiment were to predict the amount of
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Preparation of Bromotriphenylmethane Abstract The structure of a major component of star anise oil was derived by analyzing its IR spectroscopy melting point of after oxidation and purification. From the evidence obtained‚ it was concluded that the exact structured should be p-methoxybenzoic acid. Introduction The purpose of this experiment is to determine the structure of the major component of star anise oil. It is already known that this component has a molecular formula C10H12O. This
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is trading for a price of $1034.74. a. What is the bond’s yield to maturity (expressed as an APR with semiannual compounding)? b. If the bond’s yield to maturity changes to 9% APR‚ what will the bond’s price be? 6-10. Suppose a seven-year‚ $1000 bond with an 8% coupon rate and semiannual coupons is trading with a yield to maturity of 6.75%. a. Is this bond currently trading at a discount‚ at par‚ or at a premium? Explain. b. If the yield to maturity of the bond rises to 7% (APR with semiannual compounding)
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account. The percent yields for the reactants in the equation are very far from 100% yield. In the case of water‚ the percent yield came out to be meaning there were at least 2 times to 4 times more water than there should be. The percent yield of oxygen came out to be ‚ around 2%‚ maybe higher considering uncertainty of what amount of oxygen there was suppose to be. The reaction was incomplete and had to be stopped because of time‚ which explains the very high percent yield of the water and the
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