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Nuclear question please

  1. May 25, 2006 #1
    suppose that 0.001kg of uranium 235 (92 proton number) could be persuded to fission completely

    show that the energy release would be 8x10^10 J

    thanks

    p.s if one could explain how they did it that would be great too thanks
     
  2. jcsd
  3. May 25, 2006 #2

    Pengwuino

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    Gold Member

    We don't do your homework, we help you do your homework. Do you know the daughter products of the reaction?
     
  4. May 25, 2006 #3
    first part is

    nucleaon number/mass number = 92+0=X+54+0 =>38
    atomic number/proton number = 235+1=98+X+3 =>136

    i can prove the energy release using e=mc^2 and 1.66x10^-27

    but its just the last part i cant do which is

    suppose that 0.001kg of uranium 235 could be persuded to fission completely

    show that the energy release would be 8x10^10 J

    heres the question anyway

    http://www.yousendit.com/transfer.php?action=download&ufid=C42C73C107E17D17

    thanks
     
    Last edited: May 25, 2006
  5. May 25, 2006 #4

    Astronuc

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    Staff: Mentor

    Determine the number of U-235 atoms in 0.001 kg (think Avogadro's number), then muliply the energy released per fission, and that will give the energy produced by fissioning all the atoms in 0.001 kg.
     
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