138. Задачка по химии №013 873

8. 0.1 kg of ether (M = 74) contains 0.01 kg of a non-volatile substance. The vapor pressure of this solution is 426 mm Hg. Art. at 293 K, and the vapor pressure of pure ether at 293 K is 442 mm Hg. Art. Calculate the molecular weight of the solute.