Question

Thorium-234 has a half life of 24 days. If you started with a 100-g sample of thorium-234 how much would remain after 48 days?

Answer 1

The mass remaining is `=25g`

Explanation:

Initial mass is `=100g`

After `24` days, the mass will be `=100/2=50g`

After `48` days, the mass will be `=100/4=25g`