Tritium (3H) has a half-life of 12.3 years and releases 0.0186 MeV energy per decay. What is the activity of a 9.0-gram sample of tritium? (NA = 6.02 × 10^23 mol–1, 1 year = 3.16 × 10^7 s, 1 MeV = 1.6 × 10^–13 J, and mt = 3.01605 u)

a. 1.3 × 10^16 Bq
c. 3.6 × 10^14 Bq
b. 1.1 × 10^15 Bq
d. 3.2 × 10^15 Bq


D

Physics & Space Science

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Physics & Space Science