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Binding Energy Problem

  1. Oct 31, 2009 #1
    1. The problem statement, all variables and given/known data

    Problem: Calculate the binding energy of 147N (nuclear mass of 13.999234 amu) in Joules per nucleon. According to periodic table, the mass of N is 14.0067 amu.

    2. Relevant equations
    E = mc2


    3. The attempt at a solution

    Calculate mass defect:

    13.999234 - 14.0067 = 0.007466
    Convert to kg:

    0.007466 * (1.66053886 * 10-27) = 1.23976 * 10-29

    Use mass/energy equivalence (E = mc2) to calculate energy of the mass defect:

    E = (1.23976 * 10-29)(3 * 108)2 = 1.115784 * 10-12[/EQ]

    The result *should* be the binding energy of the entire molecule (I would have thought per nucleon would be just dividing this by 14) - but the answer my book gives is 1.19773*10-12 J/nucleon.

    Where have I gone wrong?
     
  2. jcsd
  3. Oct 31, 2009 #2

    Borek

    User Avatar

    Staff: Mentor

    Periodic table doesn't contain mass of a nuclide in question.

    --
    methods
     
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