When 7.0522 g of an unknown nonelectrolyte is dissolved in 150.45 g of water the freezing point is depressed from 0 deg C to -1.47 deg C. How many moles were in that sample. Kb is 1.86 degc/m?

Chemistry by OpenStax (2015-05-04)
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Chapter11: Solutions And Colloids
Section: Chapter Questions
Problem 53E: A 12.0-g sample of a nonelectrolyte is dissolved in 80.0 g of water. The solution freezes at -1.94...
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When 7.0522 g of an unknown nonelectrolyte is dissolved in 150.45 g of water the freezing point is depressed from 0 deg C to -1.47 deg C. How many moles were in that sample. Kb is 1.86 degc/m?

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