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Tritium Is Radioactive with a Half-Life of 12

Question 14

Multiple Choice

Tritium is radioactive with a half-life of 12.33 years decaying into 3He with low-energy electron emission.If we have a sample of 2.35 × 1019 tritium atoms,what is its activity in decays/second? (1 year = 3.16 × 107 s)


A) 6.64 × 107/second
B) 5.35 × 109 /second
C) 3.69 × 108/second
D) 4.18 × 1010/second

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