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Iron-55 has a half-life of 3 years. How much of a 40 gram sample will remain after 12 years? A. 4 grams B. 0 grams C. 20 grams D. 2.5 grams
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Iron-55 has a half-life of 3 years. How much of a 40 gram sample will remain after 12 years?

A. 4 grams
B. 0 grams
C. 20 grams
D. 2.5 grams

User Sbose
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1 Answer

3 votes
A I think hope it helped
User Saprina
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