Note: N$=267$ cm$^3$

$1.[40]$ The elementary reaction $AB$ takes place in $4$ same CSTRs in series $($shown below$)$ at

constant temperature and pressure. The rate constant under the reaction condition is $0\mathrm{.}6mi{n}^{-1}.$

The initial entering molar flowrate of A stream is $100\frac{\text{m}\text{o}\text{l}\text{e}}{s}$ with a concentration of $2\frac{\text{m}\text{o}\text{l}}{c{m}^3}$

If the reactor volume is $267$c$m^3$ Please

determine the conversion $x4.$