55. Solving a chemistry problem

166. During the distillation of bromobenzene with water vapor at normal atmospheric pressure, the mixture boils at a temperature of 95.25 C. Assuming that bromobenzene is practically insoluble in water, determine the molar ratio of water and bromobenzene in vapor. What mass of water vapor should be used to isolate 1 kg of bromobenzene. The saturated vapor pressure of bromobenzene at 95.25 C is 16129.3 N/m2.