Problem: For a first order reaction with a rate constant of 5.6x10 −3 s−1, how long will it take for the reactant concentration to fall to one fifth of its initial value? a) 176 s b) 428 s c) 617 s d) 287 s e) 592 s

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For a first order reaction with a rate constant of 5.6x10 −3 s−1, how long will it take for the reactant concentration to fall to one fifth of its initial value?

a) 176 s

b) 428 s

c) 617 s

d) 287 s

e) 592 s

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