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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
4.9k 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
5.7k points
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