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History, 08.10.2021 07:20 cloudyYT

The half-life of carbon is 5,700 years. A certain sample of wood has 20 grams of carbon-14 when it is alive. How many grams of carbon will it have after 5,700 years?

A. 40 grams
B. 2 grams
C. 10 grams
D. 5 grams

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