Anonymous
Anonymous asked in Science & MathematicsPhysics · 4 weeks ago

burning one metric ton (1000 kg) of coal can yield an energy of 3.30 × 10e10 j. fission of one nucleus of uranium-235 yields an average of ?

approximately 200 mev. what mass of uranium produces the same energy in fission as burning one metric ton of coal?

1 Answer

Relevance
  • Anonymous
    4 weeks ago
    Best Answer

    1 Mev = 1.6*10^-13 joule

    200 mev = 3.2*10^-11 joule

    nucleus mass = 1.674*10^-27*235 = 3.93*10^-25 kg

    3.30*10^10 / 3.2*10^-11 joule ≅ 1.03*10^21 nuclei

    1.03*10^21 nuclei * 3.93*10^-25 kg /nucleus = 4.0*10^-4 kg = 0.4 grams

    mass ratio K = 1*10^6/0.4 = 2.5*10^6

Still have questions? Get your answers by asking now.