Consider the following endothermic process in a closed chamber at 400 K: 2 NO₂(g) ⇌ 2 NO(g) + O2(g), Kp = 6.27 × 10–13. At 400 K, the value of Kp for the equiLiBrium NO(g) + ½ O2(g) ⇌ NO₂(g) is ________.