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    Exam 19: The Nucleus: a Chemists View
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    The Half-Life of Is 28 Years
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The Half-Life of Is 28 Years

Question 68

Question 68

Multiple Choice

The half-life of The half-life of   is 28 years.How long will it take for a given sample of   to be 89% decomposed? A) 9.0 half-lives B) 5 years C) 89 years D) 2.2 years E) none of these is 28 years.How long will it take for a given sample of The half-life of   is 28 years.How long will it take for a given sample of   to be 89% decomposed? A) 9.0 half-lives B) 5 years C) 89 years D) 2.2 years E) none of these to be 89% decomposed?


A) 9.0 half-lives
B) 5 years
C) 89 years
D) 2.2 years
E) none of these

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