To determine the molar masses of the unknowns, the freezing point depression was first found by first obtaining the initial temperature of the solution and then obtaining the lowest temperature the solution reached. The freezing point of the solution minus the freezing point of water equaled the freezing point depression. Using the found ΔTf, and dividing it by the constant, kf = 1.86, the molality of each unknown was found. Molar mass of the unknown was then calculated by multiplying kf by mass of the unknown in grams, and then dividing it by ΔTf and the mass of the