A 3.03-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this solution is 0.51°C below that of pure benzene. What is the molar mass of this compound? (Note: Kf for benzene = 5.12°C/m.) Ignore significant figures for this problem.

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter12: Solutions
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Problem 12.95QE
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A 3.03-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point
of this solution is 0.51°C below that of pure benzene. What is the molar mass of this
compound? (Note: Kf for benzene = 5.12°C/m.) Ignore significant figures for this problem.
a. 30.4 g/mol
O b.4.83 g/mol
O c. 243 g/mol
O d. 60.8 g/mol
e. 122 g/mol
Transcribed Image Text:A 3.03-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this solution is 0.51°C below that of pure benzene. What is the molar mass of this compound? (Note: Kf for benzene = 5.12°C/m.) Ignore significant figures for this problem. a. 30.4 g/mol O b.4.83 g/mol O c. 243 g/mol O d. 60.8 g/mol e. 122 g/mol
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