Absolute Age of Rocks and Fossils Quick Check

Question
Use this paragraph: The half-life of carbon-14 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?

(1 point)
Responses

2 grams
2 grams

10 grams
10 grams

40 grams
40 grams

5 grams
5 grams
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The correct answer is 10 grams.