Question

Tritium 3H (mt = 3.01605u) has a half-life of 12.3 years and releases 0.0186 MeV of energy per decay. What is the reason energy is released for a 4.1 g sample of Tritium?

Answer 1

$$P=\lambda N E_0\\P=\frac{0.693}{12.3\cdot3.16\cdot10^7} \frac{3\cdot6.02\cdot10^{23}}{3.016} (0.0186\cdot1.6\cdot10^{-13})\\P=3.2\ W$$