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    Exam 9: Nuclear Chemistry
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    Krypton-85 Has a Half-Life of 10 Years
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Krypton-85 Has a Half-Life of 10 Years

Question 127

Question 127

Multiple Choice

Krypton-85 has a half-life of 10 years. Approximately what percentage of Kr-85 produced from nuclear testing in 1956 still remains radioactive today?


A) 25%
B) 12%
C) 6%
D) 3%

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