Problem 2. A 1000 kmol/hr liquid stream with 40 mol% n-hexane and 60 mol% n-octane at 1 atm is sent to a horizontal flash drum operated at 1 atm with the goal of producing a vapor stream containing 60 mol% n-hexane. Based on the following specifications: a) liquid residence time: 5 minutes; b) liquid level: full; c) L/D ratio = 4; d) actual allowable vapor velocity = 0.75 x maximum allowable vapor velocity, determine: (a) The design temperature and pressure of the flash drum. (b) The purchased cost (Cp, in S) of the horizontal flash drum, which is correlated to of the drum's volume (Vol, in m) by the following relationship: log (yo) = 3.5565 +0.3776 log Vol + 0.0905(log Vol) Include all missing yet necessary thermodynamic information obtained from Aspen and show intermediate calculation steps in your answer to receive full credit