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    A 400 Gram Sample of a Radioactive Element Decays to 5
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A 400 Gram Sample of a Radioactive Element Decays to 5

Question 19

Question 19

Multiple Choice

A 40.0 gram sample of a radioactive element decays to 5.0 grams in 15 hours. What is the half-life of this element?


A) 3 hours
B) 2 hours
C) 6 hours
D) 7) 5 hours
E) 5 hours

Correct Answer:

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