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2. One hundred kmoles of a feed composed of the following mole % 20%n-butane, 40%n-pentane and 40%n-hexane is flashed at 120psia. Problem Statement: Using the Rachford-Rice procedure answer the following: a. What are the bubble and dew point temperatures for this system. b. If 65% of the n-hexane is in the liquid phase what are the temperature and the liquid and vapor concentrations. c. Compare the values found in part b to those using Chem Cad for the thermodynamic model chosen by Chem Cad and using Chem Cad with Raoult's law used to calculate the equilibrium data. Prepare your answers in Excel ... along with the graphs. You need to provide supporting data from ChemCad (ChemCad will prepare reports)