Question: A certain first - order reaction ( A products ) has a rate constant of 7 . 5 0 1 0 - 3 s -

A certain first-order reaction (A products) has a rate constant of 7.5010-3s-1 at 45C. How many minutes does it take for the concentration of the reactant, A, to drop to 6.25% of the original concentration?
Express your answer with the appropriate units.
A certain first-order reaction (A products) has a rate constant of

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