The first order reaction A → products has t1/2 = 150 sec. What percent of the sample remains unreacted after 300 sec?

Name: The first order reaction A → products has t1/2 = 150 sec. What percent of the sample remains unreacted after 300 sec?
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Question

Quizplus · Accepted Answer

For a first-order reaction, the half-life (t1/2) is constant. After one half-life (150 sec), 50% of the sample remains. After two half-lives (300 sec), 25% of the sample remains unreacted.

The First Order Reaction a → Products Has T1/2 =