120k views
21 votes
The half-life of a radioactive kind of praseodymium is 17 minutes. If you start with 56 grams of it, how much will be left after 34 minutes?

grams

User Anirudha
by
3.3k points

1 Answer

8 votes

Answer:

14 gm

Explanation:

34 minutes is TWO half lives 1/2 * 1/2 = 1/4 will be left

1/4 * 56 = 14 gm

User Marcelo Boeira
by
3.7k points