Carbon 14 decays to carbon12. The half-life of the C14 isotope is 5730 years. 3000 years after an animal dies, about  ______ of the carbon 14 will have been replaced with carbon12, while _____ will remain in a bone sample from the animals skeleton found by the archaeologists.

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Chapter14: Nuclear Chemistry
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Problem 14.103PAE
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Carbon 14 decays to carbon12. The half-life of the C14 isotope is 5730 years. 3000 years after an animal dies, about  ______ of the carbon 14 will have been replaced with carbon12, while _____ will remain in a bone sample from the animals skeleton found by the archaeologists. "

   

about 75%, about 25%

   

about 7/8ths, about 1/8th

   

about 30%, about 70%

   

a little more than half, a little less than half

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