A gas stream containing 18 mole % hexane and the remainder nitrogen. The stream flows to acondenser, where its temperature is reduced and some of the hexane is liquefied. The hexanemole fraction in the gas stream leaving the condenser is 0.0500. Liquid hexane condensate is recovered at the rate of 1.50 L/min.

(a) What is the flow rate of the gas stream leaving the condenser in mol/min? (Hint : First calculate the molar flow rate of the condensate and note that the rates at which C6H14 and N2 enter the unit must equal the total rates at which they leave in the two exit streams.)
(b) What percentage of the hexane entering the condenser is recovered as a liquid?