Question

Carbon-14 has a half-life of approximately 5,730 years. How many half-lives have occurred in a sample that contains 25 percent of the original amount of the parent isotope?

1

2

3

4

Answer 1

@diyadiya can you help me?

Answer 2

@amistre64 can you help me?

Answer 3

100% is split in half after 1 half life; that leaves us 50%

50% is split in half by another half life cycle giving us 25%

.....

Answer 4

so the answer is 2?

Answer 5

unless you can find something else that affects it, id go with 2

Answer 6

ok thanks for your help :)

Answer 7

youre welcome