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A Certain Radioactive Isotope Has a Half-Life of 4

Question 70

Multiple Choice

A certain radioactive isotope has a half-life of 4.0 hours.How much time does it take for the amount of the isotope to decrease to one-eighth of its initial amount?


A) 12 hours
B) 8.0 hours
C) 64 hours
D) 16 hours

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