(40 pts.) 4. The following information is for sizing a flash drum to separate 100 kg moles/hr of benzene and chlorobenzene. Part of the sizing information has already been calculated. Kdrum, vertical = 0.3851 ft/s It is not necessary to calculate Kdrum, verlicul. Liquid density PL = 0.9172 g/ml Vapor density: Py = 5.64 x 100 g/ml Vapor flow rate: V = 135.2 kg moles/hr Average molecular weight of the vapor: MW = 91.40 28,316.85 ml = 1 ft : 1000 g mol = 1 kg mol = a. For this separation, determine Uper, the area Ac, and the diameter of a vertical drum. Report the diameter before rounding. Show all final values in the units shown in the answer boxes. Uperm = ft/s ft? Ac= Dia = ft b. Estimate the height of the drum in feet when hota/D = 4.0 for this system. holat = ft