?

AP® Chemistry

Free Version

Upgrade subject to access all content

Difficult

Finding Percentage of Reactant Consumed in a First Order Process

APCHEM-IRN7WL

The half-life​ of a first order reaction is equal to 245 seconds.

Which of the following is the fraction of reactant remaining in the reaction after 764 seconds?

A

32%

B

0.28%

C

12%

D

50%