Question

What mass of $U^{235}$ is consumed per hour (approximately) in a nuclear reactor releasing 1 kW of fission power. (Energy released in one fission is 200 MeV)

• A. 4.4 × 10^-6 kg
• B. 4.4 × 10^-9 kg
• C. 4.4 × 10^-4 kg
• D. 4.4 × 10^-8 kg

Answer 1

The correct option is D

4.4 × 10^-8 kg

Energy = Power $\times$ time. After calculating the energy divide by 200 MeV to get the number of fissions required. Convert the number to moles and then moles in to mass in grams and finally the mass in to kilograms. }