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7 January, 05:37

Some fossil bones contain 1/8 of their original amount of carbon-14. how many half-lives have passed? how old are the bones?

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  1. 7 January, 08:57
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    1 ... 1/2 ... 1/4 ... 1/8. That's 3 half lives ... therefore do 5730 * 3 since each half life requires 5730 years, in order to find the total : 17190 years
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