Question

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

5 grams
5 grams

2 grams
2 grams

40 grams
40 grams

10 grams

Answer 1

The half-life of carbon-14 is 5,700 years, which means that every 5,700 years, the amount of carbon-14 in a sample is cut in half.

If the wood sample has 20 grams of carbon-14 when it is alive, after 5,700 years, the amount will be:

20 grams / 2 = 10 grams.

So, the correct response is:

**10 grams**.