Problem 5 A, to drop from its initial concentration of 5.0 M to its final concentration of 1.0 M. What is the half-life of the reaction? Enter your answer in the box provided with correct units and sig. figs.: Reaction, A → 2B, is 2nd- order kinetics. It takes 40 s for the reactant, The half-life of Answer: the reaction is : At½ =

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