A gas engine consumes $16,35$ m$3$ of gas per hour, the gauge pressure of the gas being $8$ kPa and the temperature $17$oC$.$ For the gas, R $=290$ J$/$kg$.$K$.$ Taking atmospheric pressure as $100$ kPa, determine:

$($a$)$ the mass of gas consumed per hour;

$($b$)$ the consumption of the gas in m $3/$hour at STP$.$