Question

The half-life of carbon-14 is 5,730 years. How many grams of parent material will remain from a 200-gram sample after 3 half-lives?

100
50
25
12.5

Answer 1

The answer to your question is 25 grams

Step-by-step explanation:

Data

half-life = 5730 years

sample = 200 g

after 3 half-lives

Process

Calculate the amount of sample after one, two and three half-lives.

After each half-life, that of sample is half the previous amount.

Number of half-lives Amount of sample

0 200 g

1 100 g

2 50 g

3 25 g