Asked by Mari

The half-life of C-14 is 5700 years. If it took seven half lives for a sample of C-14 to decay completely, how many years would have gone by?
Answered by DrBob222
7*5700 = ?
Answered by k

Carbon-14 has a half-life of 5730
years
. In a plant fossil, you find that the

14
C
has decayed to 1/32.0 of the original amount. How long ago was this plant alive?
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