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30 August, 10:57

The half-life of carbon14 is 5,730 years. If a fossil is determined to have a carbon-14 amount corresponding to 4 half-lives, what is the approximate age of the fossil?

22,000 years

35,000 years

17,000 years

29,000 years

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  1. 30 August, 13:46
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    If one half-life is 5,730 years, so four half-lifes is: 5,730 * 4 = 22,920

    The approximate age of the fossil is 22,000 years
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