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1. A solution of 4.75 g of carbohydrate in 100.0 g of water has a density of 1.017 g/mL and an osmotic pressure of 3.24 atm at 20.0 C. Calculate the molar mass of the carbohydrate.

1. A solution of 4.75 g of carbohydrate in 100.0 g of water has a density of 1.017 g/mL and an osmotic pressure of 3.24 atm at 20.0 C. Calculate the molar mass of the carbohydrate.

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter24: Biochemistry
Section: Chapter Questions
Problem 36IL: Insulin is a protein important in the metabolism of sugar. Its molar mass can be determined by means...
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1. A solution of 4.75 g of carbohydrate in 100.0 g of water has a density of 1.017 g/mL and an osmotic pressure of 3.24 atm at 20.0 C. Calculate the molar mass of the carbohydrate. 2. What mass of insulin must be dissolved in 38.0 mL of water to produce a solution with an osmotic pressure of 15.5 mmHg at 25 C? The molar mass of insulin is 5808 g/mol. 3. What mass of ethylene glycol must be added to 1255 g water to raise the boiling point to 103.9°C? 4. A solution is prepared by dissolving 384 g of sucrose (C12H22O11) in 647 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Transcribed Image Text:1. A solution of 4.75 g of carbohydrate in 100.0 g of water has a density of 1.017 g/mL and an osmotic pressure of 3.24 atm at 20.0 C. Calculate the molar mass of the carbohydrate. 2. What mass of insulin must be dissolved in 38.0 mL of water to produce a solution with an osmotic pressure of 15.5 mmHg at 25 C? The molar mass of insulin is 5808 g/mol. 3. What mass of ethylene glycol must be added to 1255 g water to raise the boiling point to 103.9°C? 4. A solution is prepared by dissolving 384 g of sucrose (C12H22O11) in 647 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
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