Chemistry

Problem

The activity of living wood is

16\,\text{dpm}\,\text{g}^{-1}

. A piece of ancient charcoal shows an activity of

4.0\,\text{dpm}\,\text{g}^{-1}

. The half-life of

^{14}\text{C}

5730\,\text{yr}

. Calculate the age of the charcoal.