Question: please answer A and B A certain first-order reaction (A products) has a rate constant of 5.40103s1 at 45C. How many minutes does it take

please answer A and B

A certain first-order reaction (A products) has a rate constant of 5.40103s1 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 second-order reaction (B products) has a rate constant of 1.90103M1s1 at 27C and an initial half-life o 282s. What is the concentration of the reactant B after one half-life? Express your answer with the appropriate units

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