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. Suppose that the reaction 2A + B to 2c has a Rate=k[A]^2[B]. And the Rate of Disappearance of B = 1.25 × 1O^-6 mol/L.s And the Rate of of formation of Al = 2.5 × 1O^-6 at the instant when [A] = [B] = 0. 1 mol/L .Calculate the Rate constant ?