A vapor mixture, 4.652 mol/s, of n-butane and n-hexane containing 50 mole % n-butane at 120˚C and 1 atm is cooled to 57˚C. At this temperature some of the vapor is condensed. Liquid and vapor streams...

A vapor mixture, 4.652 mol/s, of n-butane and n-hexane containing 50 mole % n-butane at 120˚C and 1 atm is cooled to 57˚C. At this temperature some of the vapor is condensed. Liquid and vapor streams emerge from this single unit process at a pressure of 1.447 atm. The vapor product contains 60 mole % butane.

a. What is the composition of the liquid stream?

b. What is the flow rate of the vapor stream?