Acetone is being absorbed from an acetone$-$air mixture in a multi$-$stage absorption

column using a non$-$volatile oil. The gas enters the column at $1$kmo$\frac{l}{h}$ and is $25$mol$\%$

acetone. $95\%$ of the acetone is to be absorbed$.$ The oil entering the column is acetone

free. The liquid leaving at the bottom of the column contains $8$mol$\%$ acetone. The

Henry's Law constant is $2\mathrm{.}0$atm and the operating pressure is $1$atm.

a$)$ Calculate: $V^{\text{'}},L^{\text{'}},L_0,L_N$ and $V_1.$

b$)($Python$)$ Determine the number of equilibrium stages required using the McCabe$-$

Thiele method.