Geography, 15.08.2019 13:10 Snowball080717

if a substance has a half-life of 10 million years, what fraction of the atoms
remain after 20 million years?

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if a substance has a half-life of 10 million years, what fraction of the atoms
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if a substance has a half-life of 10 million years, what fraction of the atoms remain after 20 million years?

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Another question on Geography

if a substance has a half-life of 10 million years, what fraction of the atoms
remain after 20 million years?