Aliquid stream consists of 14.5 mol% isopentane (c5h12 or ip), and the balance is a heavy hydrocarbon (hhc). the stream is fed at 1400 mol/hr to the top of a stripping column. the stripping column operates at 40°c and 2.1 atm. the liquid stream is contacted with an upward-flowing gas stream, which enters the column as pure nitrogen (n2). the residual liquid leaves the bottom of the column containing all of the hhc and 4% of the ip entering the column. the exiting gas is in equilibrium with the entering liquid. calculate the mole fractions of the gas stream exiting the column and the total molar flow rates (mol/hr) of streams entering or exiting the stripping column. assume the pressure of the mixture is maintained at 540 mmhg.