Question
The half-life of tritium (hydrogen-3) is $12.3$ yr. If $56.2 \mathrm{mg}$ of tritium is released from a nuclear power plant during the course of an accident, what mass of this nuclide will remain after $12.3$ yr? After 100 yr?
Step 1
Therefore, after one half-life (12.3 years), half of the initial amount of tritium will remain. We can calculate this by dividing the initial amount by 2: \[56.2 \, \text{mg} \div 2 = 28.1 \, \text{mg}\] Show more…
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