Consider the following reactions in a sealed vessel at equilibrium with concentrations of $N_2$ = 3.0 × $10^{–3}$ M, $O_2$ = 4.2 × $10^{–3}$ M and NO = 2.8 × $10^{–3}$ M 2NO(g) $\rightleftharpoons$ $N_2$ (g) + $O_2$ (g) If 0.1 mol $L^{–1}$ of NO(g) is taken in a closed vessel, what will be degree of dissociation ($\alpha$) of NO(g) at equilibrium?