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The half-life model is often used as a representation of a first order reaction because the half-life is inversely proportional to the rate constant. Half-life also is independent of concentration.

Based on this knowledge, which of the following is the half-life for a first order reaction whose rate constant is $2.31 \times 10^{-2} \text{ sec}^{-1}$?

A

30.0 sec

B

0.0300 sec

C

180 sec

D

0.180 sec

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