試題詳解

24. When 3.00 grams of a nonelectrolyte is dissolved in 100. grams of water, the freezing point of the resulting solution is -0.465 °C. What is the molecular weight of the nonelectrolyte? Kf for water is 1.86 °C kg/mol
(A)25.9 grams/mole
(B) 34.7 grams/mole
(C) 120. grams/mole
(D) 168 grams/mole
(E) 259 grams/mole