0.186 mol/L of A₂(g) and 0.186 B2(g) are initially present in a flask. The A2 and B₂ react according to the balanced equation below. A₂(g) + B₂(g) = 2 AB(g) When equilibrium is reached, the concentration of B₂(g) has decreased by 0.036 mol/L. What is the equilibrium constant, K, for the reaction?

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