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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