The following table gives the equilibrium vapor pressure of benzene, C6H6, at various temperatures. (TABLE CANNOT COPY) (a) What is the normal boiling point of benzene? (b) Plot these data so that you have At what temperature does the liquid have an equilibrium vapor pressure of 250mm Hg? At what temperature is this pressure 650 mm Hg? (c) Calculate the molar enthalpy of vaporization for benzene using the the Clausius-Clapeyron equation

\begin{tabular}{c|c|c|c} \hlinet(F) & Psat(psia) & Vf(ft)3/(lbm) & Vg(ft)3/(lbm) \\ \hline 430 & 286.3 & 0.0258 & 0.3102 \\ 440 & 310.5 & 0.0262 & 0.2818 \\ 450 & 336.7 & 0.0268 & 0.2565 \\ 460 & 364.2 & 0.0273 & 0.2328 \\ 470 & 393.4 & 0.0279 & 0.2112 \\ \hline \end{tabular}