Amixture of mole fraction 0.500 ethanol and 0.500 water at 25°c is fed continuously to a vessel at a rate of 500 kg/hr. the liquid is partially vaporized to a vapor with mole composition of 0.832 ethanol, with the remaining liquid 0.127 ethanol. both the liquid and vapor exiting streams have a temperature of 71 °c. (a) draw pfd for the process. (b) write the appropriate energy balance, with cancelled terms. (c) how much heat must be transferred to the mixture?