A flash drum operating at 50C and 200 kPa is used to separate 1000 kmol/h of a feed which contains 30 mol% propane, 10 mol% n-butane, 15 mol% n-pentane and 45 mol% n-hexane. Use the Rachford-Rice equation to find compositions and flow rates of both vapor and liquid product streams. Assume that Raoult's law is applicable.