100 moles of feed containing equimolar n-pentane/n-hexane is evaporated under differential conditions at 1 atm pressure until 60% evaporates. Calculate the composition of the liquid remaining in the tank as a result of the distillation process and the average composition of the total steam distilled. (30 points)

NOTE: The relative volatility of pentane relative to hexane is 3.15. a= () ()