For the synthesis of aspirin, complete the following table, using the experimental information provided. Additional data: - salicylic acid (MW 138,121 g / mol) - acetic anhydride (PM = 102.09 g / mol; d = 1.08 g / mL) - acetylsalicylic acid (PM = 180.16g / mol) Mass of salicylic acid used (g) 2.015 g Volume of acetic anhydride used (mL) 5.00 ml Mass of acetic anhydride used (d = 1.08 g / ml) 5.40 g Aspirin mass and paper filter (g) 0.678g Paper filter mass (g) 0.132g Synthesized aspirin mass (g) Theoretical percent (g) Yield percent (%) Percent error (%)

For the synthesis of aspirin, complete the following table, using the experimental information provided. Additional data: - salicylic acid (MW 138,121 g / mol) - acetic anhydride (PM = 102.09 g / mol; d = 1.08 g / mL) - acetylsalicylic acid (PM = 180.16g / mol) Mass of salicylic acid used (g) 2.015 g Volume of acetic anhydride used (mL) 5.00 ml Mass of acetic anhydride used (d = 1.08 g / ml) 5.40 g Aspirin mass and paper filter (g) 0.678g Paper filter mass (g) 0.132g Synthesized aspirin mass (g) Theoretical percent (g) Yield percent (%) Percent error (%)

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU6: Showtime: Reversible Reactions And Chemical Equilibrium

Section: Chapter Questions

Problem 7STP

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Volume of acetic anhydride: 2.98 mL Mass of salicylic acid: 1.00 g Mass of aspirin recovered: 0.67 g Calculate the theoretical yield of aspirin to two decimal places (MUST SHOW ALL WORK). Calculate your % yield based on mass recovered of aspirin divided by throretical yield x 100% and report it to the nearest whole number (MUST SHOW ALL WORK). Thank you.
In the background reading, it was pointed out that heroin can be produced from morphine in a manner similar to synthesis performed in this experiment. The balanced equation for the synthesis of heroin is given below. How many grams of heroin can be produced by the reaction of 20.00 grams of morphine and 10.00 ml of acetic anhydride? C17H19NO3 + 2 C4H6O3  C21H23NO5 + 2 HC2H3O2 Morphine Acetic Anhydride Heroin Acetic Acid
How would each of the following errors affect the determination of the molar mass of the unknown (Increase/Decrease/No effect)? a. Thermometer reads 2.0o higher than the true temperature. b. Some of the t-butanol was unknowingly spilled after it had been weighed but before the solute was added. 3. A student accidentally added acetylsalicylic acid (MW = 180.157 g/mol) rather than salicylic acid (MW = 138.121 g/mol), if no other mistakes were made, how would this error affect the determined molal freezing point depression constant for t-butyl alcohol (Kf)? 4. Based on the Tf and Kf you determined for t-butyl alcohol, predict the freezing point of a t-butyl alcohol solution containing 0.530 m NaCl. Assume 1.9 is the van’t Hoff factor for NaCl in t-butyl alcohol. Show your work.
Mass of sample = 0.2492g Number of insects = 6 Initial watch glass weight = 90.7712g Weighing of watch glass after hexane evaporation = 90.8850g Mass of crude fats = 0.1138g Percent of crude fats in tissue sample = 45.67% 1.) For adults, the recommended daily intake of fats is around 60g. Based on the class results above, how many grams of the tissue analyzed would you have to consume to meet the daily requirement? 2.) How many insects would have to be consumed to meet the daily requirement? 3.) Butter is about 85% fat, and a typical person spreads about 3g of butter on a piece of toast. How many bugs would you have to spread on your toast for an equivalent amount of fat? 4.) The crude fat could also be converted to methylated fatty acids and used as a biofuel in diesel engines and aircraft. Note the mass of the biofuel is essentially the same as that of the crude fats used to make it. a) If the biofuel has a density of 880g/L, how many grams of insects would be needed to make a…
The average American woman self-reports consuming 1.785x10^3 kcal/day. For a 139.0lb woman, express this value in joules per second per kilogram of body mass (watts per kilogram).
Given the ff. data. Determine the actual yield of aspirin. Mass of salicylic acid = 2.15 g, volume of acetic anhydride = 5 mL, weight of filter paper = 0.35 g, weight of filter paper + aspirin = 2.85 g, MM of aspirin 180.16 , MM of salicylic acid 138.12
The recommended daily dose of calcium for an 18-year-old male is 1200 mg. If 1.0 cup of whole milk contains 290 mg of calcium and milk is his only source of calcium source, how much milk should an 18-year-old male drink each day in mL? Suppose the child is lactose intolerant, do some research and explain what type of milk would be a good substitute for the child. Please give mg of calcium per cup of alternative milk value, and show calculations for how much of the alternative milk an 18-year-old male should drink each day in mL. (Hint: 1 cup = 236.588 mL) Show all work. Give numerical answers in 2 significant figures.
Q25: There are so many microbes in a single mL of culture, it is very difficult to perform one dilution to produce countable cells. Microbiologists need to perform a dilution series, where multiple dilutions are performed in sequence to arrive at the correct dilution. Dilutions are cumulative. Multiple the series of dilutions together to find the final dilution value. If 2 serial dilutions are performed, each with a value of 1, what is the cumulative dilution? Express your answer as standard notation with zero decimal places.
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Given the following values, calculate the mass of glycerol produced in the experiment. Please provide your answer to 3 decimal places. glycerol trioleate MW = 885.432 g/mol Glycerol MW = 92.09382 g/mol glycerol trioleate mass = 0.433 g NaOH mass = 0.304 g NaOH MW = 39.997 g/mol sodium oleate MW = 304.440 g/mol
In the synthesis of Hexyl Acetate, a student used 1.552 g of potassium acetate, 1.75 mL of 1-bromohexane, and 2.5 mL of DMF to obtain hexyl acetate. Show all work and include units in your calculations! Determine the theoretical yield for the student's experiment. The reaction is in the attached image.
A 1 mL sample of glycogen was calculated to contain 35 µmol (micromole) glucose. To 1 mL of this sample was added 2 mL of 2 M HCL. It was then hydrolysed by boiling the solution for 15 minutes. After boiling the hydrolysate was cooled and made up with H2O to a final volume of exactly 10 mL. The glucose was measured in this solution and found to have a concentration of 570 µg/mL (microgram/milliliter). i) Calculate the mass (mg) of glucose in the 10 mL of hydrolysate. As the 1mL of glycogen sample was made up to a final volume of 10 mL, this mass of glucose was produced by the hydrolysis of the original 1 mL glycogen sample. ii) Calculate the amount (µmol) of glucose produced by the hydrolysis of the glycogen sample. iii) Calculate the purity of the glycogen used in the sample as % Purity = (moles of measured glucose/ moles of calculated glucose in glycogen) *100 iv) state your answer in a complete sentence.

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Mass of salicylic acid used (g)	2.015 g
Volume of acetic anhydride used (mL)	5.00 ml
Mass of acetic anhydride used (d = 1.08 g / ml)	5.40 g
Aspirin mass and paper filter (g)	0.678g
Paper filter mass (g)	0.132g
Synthesized aspirin mass (g)
Theoretical percent (g)
Yield percent (%)
Percent error (%)