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What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6) in 100 g of H2O? Kf for water is 1.86oC/m

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mols glucose = g/molar mass
Solve for mols.

m = mols/kg solvent
Solve for m

delta T = Kf*m
Solve for dT and subract from zero C.

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