The equilibrium constant for the reaction N2(g) + O2(g) ⇋ 2 NO(g) is 1.69 × 10−3 at 2300 K. A mixture consisting of 5.0 g of nitrogen and 2.0 g of oxygen in a container of volume 1.0 dm3 is heated to 2300 K and allowed to come to equilibrium. Calculate the mole fraction of NO at equilibrium.

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