A liquid mixture containing $50$ mol$\%$ n$-$heptane $($A$)$ and $50$ mol$\%$ n$-$octane $($B$),$ at $303$ K$,$ is to be continuously flash$-$vaporized at a pressure of $1$ atm to vaporize $30$ mol$\%$ of the feed. What will be the composition of the vapor and liq$-$ uid and the temperature in the separator if it behaves as an ideal stage? keeping in mind that the Answer: xW $=0\mathrm{.}443$