b$.$ A gaseous mixture is created using $0\mathrm{.}60$ moles each of N$2$ and O$2$ in a $3\mathrm{.}00$ L vessel. It reacts as follows at $400\backslash$deg C$.$

N$2($g$)+$ O$2($g$)2$ NO$($g$)$

If Kc $=0\mathrm{.}25$ at $400\backslash$deg C$,$ find the equilibrium concentrations of all three gases. Take the time to check your answers as described in class. Show ALL work!