Asked by Sidiqi

The isotope carbon-14, 146C, is radioactive and has a half-life of 5730 years. If you start with a sample of 1000 carbon-14 nuclei, how many will still be around in 22920 years?

I got 62.5 atoms, am I correct??

Thank you!!
Answered by Steve
it is 4 half-lives, so 1/16 is left. You are correct.
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