P6.21 100 gmol/min of a gas stream containing 30 mol % ethane (C₂H6) and 70

mol% methane (CH4) is fed to a distillation column, where it is separated into an overhead product containing 90 mol % methane and a bottoms

product containing 98 mol % ethane. Calculate the overhead and bottoms

flow rates and the fractional recoveries of methane and ethane in their

corresponding product streams.