Oxygen gas is being released at the rate of $7\mathrm{.}2$ g$/$s from a $0\mathrm{.}15$ m$3$

cylinder, initially

containing the gas at a pressure of $15$ bar and $320$K$.$ The cylinder is insulated and its

temperature does not change during the emptying process. What will be the temperature

and pressure of the gas in the cylinder after $5$ minutes? Oxygen can be considered an ideal

gas with Cp $=30$ J$/($mol K$).$