The reaction 2A + 2B M+ N has the rate law: Rate = k[A]?. At 25°C, k = 0.0376 L mol1s1. If the initial concentrations of A and B are 0.387 M and 0.459 M, respectively (a) What is the half-life of the reaction? i seconds (b) What will be the concentrations of A andB after 30.0 minutes? [A] = i M. [B] = i

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