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If a radioactive substance's half-life is 20 years, how much of a 40-gram sample will be left after 60 years? A. 5 grams B. 10 grams C. 20 grams D. 30 grams
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If a radioactive substance's half-life is 20 years, how much of a 40-gram sample will be left after 60 years?

A. 5 grams
B. 10 grams
C. 20 grams
D. 30 grams

User Hzdbyte
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1 Answer

6 votes
20 is your answer
hope this helps
User TahsinRupam
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