Question: A feed mixture is (20 mathrm{~mol} %) propane, (35 mathrm{~mol} % mathrm{n})-butane, and (45 mathrm{~mol} % mathrm{n}) hexane. If a flash drum operates at (400

A feed mixture is $20 \mathrm{~mol} \%$ propane, $35 \mathrm{~mol} \% \mathrm{n}$-butane, and $45 \mathrm{~mol} \% \mathrm{n}$ hexane. If a flash drum operates at $400 \mathrm{kPa}$, what is the highest temperature the flash drum can operate and still have vapor and liquid present? Use DePriester charts for VLE.

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