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Total energy released when every atom in a given mass of fissile material undergoes fission

This type of question, asked 2 times: 24 Jan 2023, 23 Jan 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    24 Jan 2023

    113
    The energy released per fission of nucleus of  240X\ ^{240}X is 200MeV200MeV. The energy released if all the atoms in 120 g120\text{ }g of pure  240X\ ^{240}X undergo fission is n×1025MeVn \times10^{25}MeV. The value of nn is ____\_\_\_\_. (Given NA=6×1023N_{A}= 6 \times10^{23})

  2. Question 2

    23 Jan 2026 S2

    21
    The average energy released per fission for the nucleus of  92235U\ _{92}^{235}U is 190 MeV. When all the atoms of 47 g pure  92235U\ _{92}^{235}U undergo fission process, the energy released is α×1023MeV\alpha \times 10^{23}MeV. The value of α\alpha is ____\_\_\_\_ . (Avogadro Number =6×1023= 6 \times 10^{23} per mole)