Question

In the first-order reaction, 75% of the reactant disap-
peared in 1.388 h. Calculate the rate constant of the
reaction:
(B) 2.8 x 10-45-1
(C) 17.2 x 10-35-1
(D) 1.8 x 10-35-1
(A) 151
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Answer 1

Answer:

2.8 x 10-45-1 is your answer