Absorption #1: Acetone-Oil Absorption By means of a plate column, acetone is absorbed from its mixture with air in a non-volatile absorption oil. The entering gas contains 20.0 mole percent acetone, and the entering oil is acetone-free. Of the acetone in the air, 98.5 percent is to be absorbed, and the concentration of the liquor at the bottom of the tower is to contain 5 mole percent acetone. The equilibrium relationship is ye-1.80xe. Plot the operating line and determine the minimum number of stages. Hint: Choose 100 moles of entering gas as a basis.