A stream containing 60 mol% methanol and 4() mol% 1-pentanol is being separated in a flash drum at 90 degree C and with a feed flow rate of 100 mol/s. Generate a Pxy diagram for the mixture using Raoult's Law. Use the Pxy diagram to estimate the flow rate and composition of the top and bottom streams if the drum is operated at 50 kPa. (A: yMethanol = 0.7, xMetanol = 0.15, nTop = 80 mol/s)