An equimolar n$-$pentane$(1)/$n$-$heptane$(2)$ liquid mixture is flashed at $379\mathrm{.}6mmHg$ and $325K.$ Saturation

pressures at this temperature are $1302\mathrm{.}7mmHg$ and $152\mathrm{.}7mmHg$ respectively. Analysis of the liquid

phase leaving the unit reveals that the flow rate for the liquid is $0\mathrm{.}882$mole$\frac{s}{sec}.$ What is the flow rate of

the mixture entering the flash distillation unit? What is the flow rate and composition of the vapor

leaving the flash distillation unit?