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Calculate the freezing point of a solution that contains 30.0 g of urea, CH4N2O, in 200. g of water. Urea is a nonvolatile nonelectrolyte. Kf for H2O = 1.86°C/m.
-1.86°C
-2.79°C
-3.72°C
-4.23°C
-4.65°C
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