Afour component mixture is fed to a flash chamber. the mixture is composed of the following, all in mole fractions: a) n-butane (0.425); b) n-pentane (0.125); c) n-hexane (0.205); and n-heptane. the flash unit operates at a pressure of 2 atm. a)find the bubble point temperature (assume the feed comes in as a liquid) and the composition of the vapor phase in equilibrium with the liquid phase at this point; b)find the dew point temperature (assume the feed comes in as a vapor) and the composition of the liquid phase in equilibrium with the vapor phase at this point; c)find the temperature and composition of both liquid and vapor phases when 40% of the feed is vaporized in a flash distillation. d)use chemcad to solve these problems and compare your results to the predictions from chemcad.