Nuclear Physics Find molar binding energy

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SUMMARY

The molar binding energy of carbon-12 nuclei is calculated using the mass-energy equivalence formula E=mc². The mass of six protons and six neutrons before binding is 12.09564u, while the mass of carbon-12 after binding is 12u, resulting in a mass defect of 0.009564u. This mass defect can be converted to energy using the conversion factor of 9x10^16 kJ/g. To find the energy per mole, one must account for Avogadro's number, which is approximately 6.022 x 10²³ atoms/mol.

PREREQUISITES
  • Understanding of mass-energy equivalence (E=mc²)
  • Knowledge of atomic mass units (u)
  • Familiarity with Avogadro's number (6.022 x 10²³)
  • Basic conversion between energy units (kJ/g to kJ/mol)
NEXT STEPS
  • Learn about the calculation of binding energy per nucleon in nuclear physics
  • Study the concept of mass defect and its significance in nuclear reactions
  • Explore the relationship between atomic mass units and energy conversion
  • Investigate the implications of binding energy on nuclear stability and reactions
USEFUL FOR

Students studying nuclear physics, educators teaching atomic structure, and researchers interested in nuclear binding energy calculations.

dav1d
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Homework Statement


What is the molar binding energy of the carbon 12 nuclei?


Homework Equations


e=mc2


The Attempt at a Solution


proton mass = 1.00728u
neutron mass: 1.00866u

before: 6p+6n = 12.09564u
after: carbon 12 = 12u
delta m = 0.009564u

E=mc2
=(.009564u)(9x10^16kJ/g)

now I don't know what to do, you can convert u and g to the same unit but they cancel out, so how do I get kJ/mol
 
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Your equation above is the energy per atom. How many atoms per mole?
 
I'm getting 8.6 not 8.9 now... Carbon 12 is 12...
 

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