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May 29, 2015

Homework Help: Chemistry

Posted by Anonymous on Wednesday, February 16, 2011 at 12:14am.

When 9.18 g of a soluble nonelectrolyte was dissolved in 100 g of ethanol at 78.4C, the vapor pressure of the solution was measured to be 740 mm Hg.
a)
What are the mole fractions of ethanol and solute?
b)
What is the molecular weight of the solute?

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