Saturated-liquid benzene at pressure P1 = 10 bar = (T1 sat = 451.7 K) i*. throttled in a steady-flow process to a pressure P2 = 1.2 bar (T2 sat = 358.7 K), where it is a liq- uid/vapur mixture. Estimate the molar fraction of the exit stream that is vapor. For liquid benzene. CP = 162 J mol-1 K-1. Ignore the effect of pressure on the enthalpy of liquid benzene.