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Chemistry
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The amount of 14C in an old, isolated sample of vegetation is 0.809 that expected from a present day sample with an equivalent carbon content. Calculate the age of the old sample in years.

Jan 2nd, 2015

The half life of C14 is 5730 years.

Assuming the age of this sample is t.

Then (1/2)^(t/5730)=0.809

t/5730=log 0.809/log 0.5=0.306

t=5730x0.306=1753 years

Jan 2nd, 2015

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