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? (N_A = 6.02 *10²³ mol^-1, 1 year = 3.16 * 10⁷ s, 1 MeV = 1.6 *10^-13 J, and m_t = 3.01605 u)

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The activity (A) is calculated using A = λN, where λ = ln(2)/half-life. First, calculate the number of moles of tritium, then the number of atoms (N = moles × N_A). Convert the half-life to seconds and calculate λ. Finally, calculate the activity in Bq.

Tritium (3H) Has a Half-Life of 12

Tritium (³H) Has a Half-Life of 12