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A 1.50 L vessel contains an equilibrium mixture of 0.100 mol of NO, 0.150 mol of Br2, and 0.250 mol of NOBr at 25°C. What is the value of Kp for the reaction below? 2 NO(g) + Br2(g) ⇌ 2 NOBr(g)? A) 2.56 B) 1.53 × 10^3 C) 62.5 D) 1.28 × 10^2