4. If the rate law for a given reaction was rate=k[A][B]2 and the value of k is 0.0010 M-2s-1, what is the rate if the initial concentrations for A and B are 0.020 M and 0.010 M, respectively? a. 2.0x10-9M s-1 b. 4.0x10-14 M s-1 c. 2.0x10-7 M s-1 d. 4.0x10-9 M s-1

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