Problem $1(25/100)$: The elementary liquid phase reaction

$2AB$

is carried out isothermally in a CSTR$.$ Pure A enters at a volumetric flow rate of $25d\frac{m^3}{s}$ with a

molar concentration of $0\mathrm{.}2mo\frac{l}{d}{m}^3.$ What is the CSTR volume $($in $d{m}^3)$ necessary to achieve $90\%$

conversion when the reaction rate constant is $k=10d\frac{m^3}{\text{m}\text{o}\text{l}\text{s}}?$