ASAP$>$ PLEASE SOLVE

Enzyme E catalyses the fermentation of substrate $A($the reactant$)$ to product $R.$

The kinetics of the fermentation at this enzyme concentration are give by

$A$enzymeR,$-r_A=\frac{0\mathrm{.}1C_A}{1+0\mathrm{.}5C_A},\frac{\text{m}\text{o}\text{l}}{\text{l}\text{i}\text{t}\text{e}\text{r}\text{m}\text{i}\text{n}}$

For a feed stream $(10$ liter$/$min$)$ of reactant $(2mo\frac{l}{l}$iter $)$ and enzyme, what is the concentration of reactant at $80\%$ conversion?

mol$/$liter

Find the size of the CSTR needed for $80\%$ conversion of reactant.

liters