Rev MISSED THIS? Read Section 4.4 (Pages 149 - 155); Watch KCV 4.4, IWE 4.6. Correct answer is shown. Your answer 233.2 kg was either rounded differently significant figures than required for this part. Important: If you use this answer in later parts, use the full unrounded value in y The theoretical yield is the mass of product that could hypothetically be produce- determine the theoretical yield of urea (CH N20), convert the molar amount of reactant (NH3) as determined in Part A to kilograms (kg). Use the molar mass moles (mol) to grams (g). Then, convert grams to kilograms using the convers Urea (CH,N2O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH) with carbon dioxide as follows: 2NH3(aq) + CO2(aq) CH N20(aq) + H20(1) In an industrial synthesis of urea, a chemist combines 132.1 kg of ammonia with 211.4 kg of carbon dioxide and obtains 163.8 kg of urea. 60.06 g CH,N,O 1 mol CH N,O 1 kg 3880.7 mol CH,N20 x 1000 g Part C Determine the percent yield for the reaction. Express your answer using three significant figures. » View Available Hint(s) Submit

Rev MISSED THIS? Read Section 4.4 (Pages 149 - 155); Watch KCV 4.4, IWE 4.6. Correct answer is shown. Your answer 233.2 kg was either rounded differently significant figures than required for this part. Important: If you use this answer in later parts, use the full unrounded value in y The theoretical yield is the mass of product that could hypothetically be produce- determine the theoretical yield of urea (CH N20), convert the molar amount of reactant (NH3) as determined in Part A to kilograms (kg). Use the molar mass moles (mol) to grams (g). Then, convert grams to kilograms using the convers Urea (CH,N2O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH) with carbon dioxide as follows: 2NH3(aq) + CO2(aq) CH N20(aq) + H20(1) In an industrial synthesis of urea, a chemist combines 132.1 kg of ammonia with 211.4 kg of carbon dioxide and obtains 163.8 kg of urea. 60.06 g CH,N,O 1 mol CH N,O 1 kg 3880.7 mol CH,N20 x 1000 g Part C Determine the percent yield for the reaction. Express your answer using three significant figures. » View Available Hint(s) Submit

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability

Section: Chapter Questions

Problem 41PS

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One of the reactions in the Solvay Process involves the reaction of calcium oxide with water toproduce slaked lime (calcium hydroxide).CaO(s) + H O2 (l) - Ca(OH)2 (s)A lab technician performs the experiment and uses 54.8 g of calcium oxide to react with a setamount of water. When the reaction is completed, the technician uses a filtration apparatus tocollect the mass of calcium hydroxide produced. The following data is recorded:Mass of filter paper: 1.24 gMass of filter paper and solid: 68.04 g What is the theoretical mass of calcium hydroxide that is predicted to be produced? What mass of precipitate was collected in this experiment? What is the percent error? Comment on the validity of the results
A student determined fluoride in a toothpaste sample using ion chromatography. A toothpaste sample of mass 0.100 g was dissolved in type I water and then quantitatively filtered through a Whatman #1 filter paper into a clean 100 ml volumetric flask. The flask was then made up to volume with type I water and mixed thoroughly.A portion of the solution was filtered through a 0.45 um filter into a sample vial for analysis. Analysis of the sample gave a fluoride concentration of 1.60 mg/l Calculate the % w/w fluoride in the original toothpaste sample. (Give your answer to 3 decimal places please)
Q5. As part of the aspirin synthesis lab, the orgo students also had to perform the following calculation to demonstrate their knowledge. Are you able to help them work this out? Saponification is a process in which soap is produced from the chemical reaction between animal fat (triglycerides) and a strong base such as KOH. An example of such a balanced chemical reaction is shown here: C51H98O6 + 3KOH à C3H5(OH)3 + 3C16H31O2K Triglyceride Soap If, during the saponification reaction, 231.5 g of C51H98O6 is mixed with 231.5 g of KOH and 160 g of soap is produced: Calculate the theoretical yield of soap (in grams), C16H31O2K, and indicate which species is the limiting reactant. Provide your answer to 2 decimal places (5). Calculate the percent yield for this reaction. Provide your answer to 1 decimal place (1). Show ALL steps and equations involved in your calculations. Remember to label all steps clearly and use appropriate units.
Orciprenaline(C11H17N03,211.258 g/mol) is a bronchodilatorused in the treatment of asthma.The BP assay for orciprenalinetablets is described below. Read thefollowing information carefully andanswer the questions below.(Record your answers in decimalnotation to the indicated significantfigures OR decimal places)ASSAY - 20 tablets weighing 2.597 gwere crushed to a powder. Aportion of the crushed powder(0.5456 g) was shaken with 50 mL of0.1 M HI, the mixture was filteredand made up to 100 mL. 10 mL ofthis solution was further diluted to100 mL with 0.1 M HCI. Themeasured absorbance of thediluted solution at 276 nm was0.582. Additional information: A1%72.3, stated content = 20 mg Calculate:a) The concentration oforciprenaline in the diluted solutionin mg/L b) The actual amount oforciprenaline (in mg) in the powderassayed.c) The actual amount oforciprenaline (in mg) per tablet.d) The percentage of stated contentof per tablet.
Cocaine (C17H21O4N) is a natural substance found in the leaves of the coca plant, which has been used for centuries as a local anesthetic and stimulant. Illegal cocaine arrives in the USA either as a pure compound or as the hydrochloride salt (C17H21O4NHCl). At 25oC, the salt is very soluble in water (2.50 kg/L), but pure cocaine is much less so (1.70 g/L). What is the maximum amount of salt (in gram) that can dissolve in 50.0 mL of water? [1 mark.] When a 25 mL aqueous solution that contains 62.50 g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water (in liters) is needed additionally to dissolve the formed pure cocaine? Round your final answer off to two decimal points. C17H21O4NHCl(aq) + NaOH(aq) → C17H21O4N(aq) + H2O(l) + NaCl(aq)
Cocaine(C17H21O4N) is a natural substance found in the leaves of the coca plant, which has been used for centuries as a local anesthetic and stimulant. Illegal cocaine arrives in the USA either as a pure compound or as the hydrochloride salt(C7H21O4NHCl). At 25 degrees celsius, the salt is very soluble in water(2.59kg/L), but pure cocaine is much less so(1.70g/L) a. What is the maximum amount of salt in grams that can dissolve in 50.0mL of water? b. When a 25mL aqueous solution that contains 62.50 g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water in liters is needed additionally to dissolve the formed pure cocaine,
What will be the resulting percentage (w/w) of the said syrup if 300 g /2L of sucrose will be used? Density of syrup is 1.313 g/mL. Master Formula Sucrose 850g; Purified water qs ad 1000mL a 9.62 % b 8.9% c 11.42 % d 5.63% e 10.62 %
Formaldehyde (CH2O, MM = 30.03) has a multitude of uses includingtissue preservation. Formalin is a commercially available solution offormaldehyde and has a concentration of 19.6 m formaldehyde anda density of 1.09 g/cm3. What is the mass% of formaldehyde in thesolution?
At elevated temperature NaHCO3 is quantitatively converted to Na2CO3. By calcining 0.3592 g of an antacid tablet containing NaHCO3, 0.2362 g of Na2CO3 was obtained. Calculate the percentage purity of the tablet (such as % w/w NaHCO3) It would be appreciated if you could write each step to the answer.
An impure sample of 0.1002 g benzoic acid underwent purification by recrystallization. A mass of 0.0542 g of white solid benzoic acid was obtained. Calculate the % purity of the initial sample. Show calculations and report the result with correct number of significant figures. Hi there please answer all parts clearly and concisely with legible hand writting, thank you!
Use the web to determine the differences in the amounts of aluminum recycled in states where there are deposits on aluminum cans versus states where recycling is voluntary. What is the most reliable way to estimate this value? mat uncertainty is there in the estimate?