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  • one year ago

Carbon-14 has a half life of 5,730 years.after how many half-life will 120 grams of carbon-14 decay to 15 grams?

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  1. lfreeman1285
    • one year ago
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    There's a pretty helpful equation that can help you solve this. A=Ao(.5)^(t/h) In this equation, A is the final amount, Ao is the initial amount, t is the time, and h is the half life. So if you plug all that in, you get 15=120(1/2)^(t/5730) Now all you have to do is solve for t.

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