$2$ H$\_2+2$ NO $$ N$\_2+2$ H$\_2$ O

Find the overall order of the irreversible reaction above using the following constant$-$volume data $($i$.$e$.$ data collected in a constant$-$volume reactor$)$ obtained using equimolar quantities of hydrogen and nitric oxide at T$=296$ K

$67104115186265$ Half$-$life $($seconds$)$

$360320280240200$ Total pressure $($mmHg$)$