Consider the following reaction: 2 \mathrm{NOCl}(\mathrm{g})<2 \mathrm{NO}(\mathrm{g})+\mathrm{Cl}_{2}(\mathrm{~g}) \mathrm{K}_{\mathrm{c}}=50.0 Initially some NOCI(g) was placed in a flask. When equilibrium is reached it is found that the concentration of the nitrogen monoxide

gas is 1.20 mol/L. What was the initial concentration of the NOCI(g)?(Answer to 3 s.d.) mol/L