Trying to figure out this equation I did the first part but I am really having trouble getting this one and my professor told me to re do it. Trying to calculate ke for the following equation (equilibrium concentration below problem)

NO^2(g) + O^2(g) + heat <-> NO(g) + O^3(g)
[0.072] [0.083] [6.73 X 10^-2] [6.73 X 10^-2]

see other post.