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The half-life of carbon-14 is 5730 years. Explain how to figure out the age of a substance that has 25% carbon-14 remaining.
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The half-life of carbon-14 is 5730 years. Explain how to figure out the age of a substance that has 25% carbon-14 remaining.

User Xavier Poinas
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It would be 2865 years.
User Sunil Mishra
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Multiply 5730 years by 2 since two half-lives have gone by for carbon.
User Interactive Llama
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