450 kmol per hour of a mixture of n-butanol and iso-butanol containing 30 mole % n-butanol is separated by distillation into two fractions. The flow rate of n-butanol in the overhead stream is 120...

450 kmol per hour of a mixture of n-butanol and iso-butanol containing 30 mole % n-butanol is separated by distillation into two fractions. The flow rate of n-butanol in the overhead stream is 120 kmol per hour and that of iso-butanol in the bottom stream is 300 kmol per hour. The operation is at a steady state. Calculate the unknown component flow rates in the output streams. What is the mole fraction of n-butanol in the bottom stream? What is the mass fraction?