The reaction A + B → C is found to have the rate law: rate = k[A][B]. When the concentrations of A and B are both 0.100 M, the reaction rate is 0.250 M/s. What is the numerical value of k for this reaction (with appropriate units where time is in seconds and concentration is in M, as needed).
0.0025
0.0400
400.
2.5
25.0
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