After 5,700 years, the sample of wood will have half of its original amount of carbon-14. Since the original amount is 20 grams, after 5,700 years it will have:
\[ \frac{20 \text{ grams}}{2} = 10 \text{ grams} \]
So the correct answer is 10 grams.
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
10 grams
1 answer