Determine the melting point of an aqueous solution containing 201 mg of saccharin (C7H5O3NS) added to 1.00 mL of water (density of water = 1.00 g/mL, Kf = 1.86°C/m).

Calculate the freezing point of an 0.260 m aqueous solution of lithium perchlorate (LiClO4). The freezing point of pure water is 0.00 oC and the Kf of water is 1.86 oC/m.

3) A student weighed 1.75 g of an unknown molecular compound and dissolved it in 15 ml of water. The freezing point of the solution was measured to be -3.5 °C. Calculate the molar mass of the compound. (KF1.86 °C/m for water).

The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is aspirin.Calculate the vapor pressure of the solution at 25 °C when 10.17 grams of aspirin, C9H8O4 (180.1 g/mol), are dissolved in 151.7 grams of diethyl ether.diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.           The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25°C.How many grams of estrogen (estradiol), C18H24O2, a nonvolatile, nonelectrolyte (MW = 272.4 g/mol), must be added to 192.1 grams of diethyl ether to reduce the vapor pressure to 452.63 mm Hg ?diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.