Chemistry - Liquid Solution Question with Solution | TestHub

The vapour pressure of pure liquid$\text{A}$is$\text{10}\text{torr}$and at the same temperature when$\text{9}\text{g}$of$\text{B}$solid dissolved in$\text{20}\text{g}$of$\text{A,}$its Vapour pressure is reduced to$\text{5}\text{torr}\text{.}$If the molecular mass of$\text{A}$is$\text{200}\text{amu,}$then the molecular mass of$\text{B}$is