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9. A sample weighing 0.546 g was dissolved in 15.0 g of benzene. The Freezing Point depression is 0.240°C. The k for benzene is 5.12 °Ckg/mol. Calculate the molar mass of the sample.

9. A sample weighing 0.546 g was dissolved in 15.0 g of benzene. The Freezing Point depression is 0.240°C. The k for benzene is 5.12 °Ckg/mol. Calculate the molar mass of the 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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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9. A sample weighing 0.546 g was dissolved in 15.0 g of benzene. The Freezing Point depression is 0.240°C. The k for benzene is 5.12 °Ckg/mol. Calculate the molar mass of the sample. 10. A 1.00*10³ g of protein sample was dissolved in an enough water to make a 1.00 mL solution. The osmotic pressure of this solution is 1.12 torr at 25.0°C. Calculate the molar mass of the protein sample. Given 1 atm = 760 torr, R = 0.08206 Latm/Kmol.
Transcribed Image Text:9. A sample weighing 0.546 g was dissolved in 15.0 g of benzene. The Freezing Point depression is 0.240°C. The k for benzene is 5.12 °Ckg/mol. Calculate the molar mass of the sample. 10. A 1.00*10³ g of protein sample was dissolved in an enough water to make a 1.00 mL solution. The osmotic pressure of this solution is 1.12 torr at 25.0°C. Calculate the molar mass of the protein sample. Given 1 atm = 760 torr, R = 0.08206 Latm/Kmol.
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