Chemical Equilibrium

The following concentrations were observed at \(500 \mathrm{~K}\) for the formation of \(\mathrm{NH}_3\) from \(\mathrm{N}_2\) and \(\mathrm{H}_2\). At equilibrium ; \(\left[\mathrm{N}_2\right]=2 \times 10^{-2} \mathrm{M},\left[\mathrm{H}_2\right]=3 \times 10^{-2} \mathrm{M}\) and \(\left[\mathrm{NH}_3\right]=1.5 \times 10^{-2} \mathrm{M}\). Equilibrium constant for the reaction is ________.