# physical science

posted by
**Clarissa**
.

If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years?

posted by
**Clarissa**
.

If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years?