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What Is the Half-Life of a Radioactive Substance If 3

Question 94

Multiple Choice

What is the half-life of a radioactive substance if 3.4 g decays to 0.80 g in 75 hours? Round to the nearest tenth of an hour.

A) 35.9 hours
B) 26.9 hours
C) 18.0 hours
D) 9.0 hours
E) 56.5 hours

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