1.pressure of the solvent at the same temperature M_b=0.3M_a, where M_a& M_bare the molecular weight of (A The vapour pressure of a solution of a non-volatile electrolyte (A) in a solvent (B) is 95% of the vapour) & (B) respectively calculate the weight ratio of the solvent and solution pressure of the solvent at the same temperature.
2.how many grams of sucrose(M.wt=342) should be dissolved in 100g of water in order to produce a solution with a 105^oc difference between freezing point and boiling point tempretures?(k_b=0.51,and k_f​=1.86)