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10. In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.053 g of poly(vinyl alcohol) in enough water to make 100.0 mL of solution. At 25°C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?

10. In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.053 g of poly(vinyl alcohol) in enough water to make 100.0 mL of solution. At 25°C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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just question 10 please I need a complete solution :(

7. The boiling point of ethanol (CaHsOH) is 78.5°C. What is the boiling point of 3.4 g of vanillin (MW = 152.14 g/mol) in 50.0 g of ethanol (kb of ethanol = 1.22 °C/m) 8. What is the minimum mass of ethylene glycol (CaH&Oz2) that must be dissolved in 14.5 kg of water to prevent the solution from freezing at -10.0 F? 9. Wastewater discharged into a stream by a sugar refinery contains sucrose (C12H22O11) as its main impurity. The solution contains 3.42 g of sucrose/L. A government industry project is designed to test the feasibility of removing the sugar by reverse osmosis. What pressure must be applied to the apparatus at 20°C to produce pure water? 10. In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.053 g of poly(vinyl alcohol) in enough water to make 100.0 mL of solution. At 25°C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?
Transcribed Image Text:7. The boiling point of ethanol (CaHsOH) is 78.5°C. What is the boiling point of 3.4 g of vanillin (MW = 152.14 g/mol) in 50.0 g of ethanol (kb of ethanol = 1.22 °C/m) 8. What is the minimum mass of ethylene glycol (CaH&Oz2) that must be dissolved in 14.5 kg of water to prevent the solution from freezing at -10.0 F? 9. Wastewater discharged into a stream by a sugar refinery contains sucrose (C12H22O11) as its main impurity. The solution contains 3.42 g of sucrose/L. A government industry project is designed to test the feasibility of removing the sugar by reverse osmosis. What pressure must be applied to the apparatus at 20°C to produce pure water? 10. In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.053 g of poly(vinyl alcohol) in enough water to make 100.0 mL of solution. At 25°C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?
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