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wrote...
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Posts: 3560
12 years ago
The number of radioactive nuclei in a particular sample decreases to one-eighth of its original number in 9 days. What is the half-life of these nuclei?
A) 9/8 days
B) 2 days
C) 3 days
D) 8 days
E) 10 days
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wrote...
12 years ago
C) 3 days
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