The concentration of carbon-14 in living plants is about 240 Bq/kg C.If a tree dies today,what concentration of carbon-14 would still be present after 2 half-lives?

Question

Quizplus · Accepted Answer

The half-life of carbon-14 is 5730 years. After one half-life, the concentration of carbon-14 in the dead plant will be reduced to half of its original value, i.e. 120 Bq/kg C. After two half-lives, it will be reduced to half of that, or 60 Bq/kg C.

The Concentration of Carbon-14 in Living Plants Is About 240