b. Q kg/hr of a mixture of Ethanol (E), Toluene (T) and Water (W) was fed to a distillation column as shown below. The operation is at steady state. The mass flow rates of ethanol at the top and the bottom streams are 800 and 125 Ekg/hr, respectively. Calculate the unknown streams (Q and S) and the unknown mass fractions: XE, XT, YE, YT, Me and Mr. [6] S Yw = 0.2875 YE Q Xw= 0.45 XE 1500 Mw = 0.67 ME MT