Question

Please help me!! {FAN AND MEDAL}

Answer 1

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 2

In every half life, the amount of carbon left is halved.
1st half life: 200/2=100
2nd half life: 100/2=50
3rd half life: 50/2=25.

Therefore, there are 25 g carbon remaining after 3 half-lives.

Answer 3

Thanks!!

Answer 4

No problem!

Answer 5

Fan pls!

Answer 6

I fanned you. Is it not showing up @BioEpic ?