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PSYCHO15rus [73]
3 years ago
14

If a substance has a half-life of 10 million years, what fraction of the atoms

Geography
1 answer:
nadya68 [22]3 years ago
5 0
Answer is 1/4 of the atoms

at 0 years it would be the full amount (X)

at 10 million years you have half: X/2

at 20 million years you have 1/4 because: (X/2)/2 will equal 1/4
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