Solve the all given parts of following problem:
Problem: Radioactive materials have sometimes been used directly as a power source. Thermal energy, produced during the decay process, is converted to electrical energy using a thermocouple.
Part A: How much energy (J) could be generated from the decay of a mole of 238-Pu?
Part B: How much energy is generated per minute by 2.0 kg of 238-Pu?
I'm looking for a brief but thorough explanation, and an example.