A gas stream contains 18.0 mole % hexane and the remainder nitrogen. The stream flows to a condenser, where its temperature is reduced and some of the hexane is liquefied. The hexane mole fraction in the gas stream leaving the condenser is .0500. Liquid hexane condensate is recovered at a rate of 1.50 L/min. a) what is the flow rate of the gas stream leaving the condenser? b) what percentage of the hexane entering the condenser is recovered as liquid? yikes, no idea where to start. probably should calculate the molar flow rate of the condensate since the rates at which the hexane and nitrodgen enter the unit must equal the total rates at which they leave in the two exit streams - but how?