Aliquid process stream consisting of 72 mole% benzene and 28 mole% toluene is fed to a unit operation from which two streams - a vapor stream and a liquid stream-are produced. operating at steady state, the total molar flow rate of the vapor stream is 75 % of the feed molar flow rate, and the liquid stream is 90 mole% toluene. 3. draw and fully label a flowchart for the process. a. b. assuming a feed rate of 100 mol/min, write the total mole balance equation, the benzene mole balance equation, and the toluene mole balance equation for the process. using only the total mole balance and benzene mole balance equations, solve for the molar flow rates of both components in the vapor and liquid product streams. c. d. using only the benzene mole balance and the toluene mole balance equations, solve for the molar flow rates of both comporients in the vapor and liquid product streams.