We have a simple batch still separating 1,2 dichloroethane from 1,1,2 trichloroethane. Pressure is 1 atm. The relative volatility for this system is very close to constant at a value of 2.4. The use of Eq. (9-13) is recommended. a. The charge (F) is 1.3 kmol. This feed is 60 mol% dichloroethane. We desire a final still pot concentration of 30 mol% dichloroethane. Find the final moles in the still pot and the average mole fraction of the distillate product. b. Repeat part a if the feed charge is 3.5 kmol. c. If the feed charge is 2.0 kmol, the feed is 60 mol% dichloroethane, and we want a distillate with an average concentration of 75 mol% dicholoroethane, find the final kmoles in the still pot and the final mole fraction of dichloroethane in the still pot