At a certain temperature, the reaction
A₂(g) + B₂(g) ⇌ 2AB(g)
was allowed to reach equilibrium in a rigid 2.00 L container. Initial amounts were 1.50 mol A₂ and 1.50 mol B₂ with no AB present. When equilibrium was attained, 1.10 mol of A₂ and 1.10 mol of B₂ remained.
Calculate the numerical value of K_c for this reaction at the given temperature, using appropriate significant figures.