# chemistry

posted by
**123** on
.

The half-life of a first order reaction is determined to be 74.5 years. How long will it take for the concentration of the reactant to reach 2% of its initial value?

posted by
**123** on
.

The half-life of a first order reaction is determined to be 74.5 years. How long will it take for the concentration of the reactant to reach 2% of its initial value?