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Plutonium-32 has a half-life of 14.2 days. After 99.4 days, how much of what was originally a 499.2 gram sample remains? 14 grams 3.9 grams 35.7 grams 0.71 grams
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38 votes
38 votes
Plutonium-32 has a half-life of 14.2 days. After 99.4 days, how much of what was originally a 499.2 gram sample remains?

14 grams

3.9 grams

35.7 grams

0.71 grams

User Aviv Shaked
by
3.0k points

1 Answer

12 votes
12 votes

Answer:

3.9 gm remains

Step-by-step explanation:

499.2 ( 1/2)^(99.4/14.2) = 3.9 gm

User Mattias Wadman
by
2.8k points
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