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Solution: A solution that contains 12.6 g of a solid nonvolatile nonel...

Question

A solution that contains 12.6 g of a solid nonvolatile nonelectrolyte dissolved in 400 g of benzene freezes at 3.6°C. The normal freezing point of benzene is 5.5°C. What is the molar mass of the solute? (Kf for benzene is 4.96°C kg/mole)