1. If a 23.6 g sample of a nonelectrolyte is dissolved in 136.0 g of water, the resultingsolution will freeze at -0.85°C. What is the molar mass of the nonelectrolyte? (Kƒfor wateris 1.858°C/m.)2. What is the mole fraction of urea, CH4N20, in an aqueous solution that is 51.0 urea bymass? (Molar mass of H20 = 18.00 g/mol, Molar mass of urea = 60.00 g/mol)

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1. If a 23.6 g sample of a nonelectrolyte is dissolved in 136.0 g of water, the resulting solution will freeze at -0.85°C. What is the molar mass of the nonelectrolyte? (Kƒfor water is 1.858°C/m.)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 53QRT

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1. If a 23.6 g sample of a nonelectrolyte is dissolved in 136.0 g of water, the resulting
solution will freeze at -0.85°C. What is the molar mass of the nonelectrolyte? (Kƒfor water
is 1.858°C/m.)
2. What is the mole fraction of urea, CH4N20, in an aqueous solution that is 51.0 urea by
mass? (Molar mass of H20 = 18.00 g/mol, Molar mass of urea = 60.00 g/mol)

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