Nuclear Physics Find molar binding energy

AI Thread Summary
The discussion focuses on calculating the molar binding energy of carbon-12 nuclei using the mass-energy equivalence formula E=mc². The user calculates the mass defect by comparing the total mass of individual protons and neutrons to the mass of the carbon-12 nucleus, resulting in a mass defect of 0.009564u. They express confusion about converting this energy from per atom to per mole, noting the importance of knowing the number of atoms in a mole. The conversation emphasizes the need to convert units correctly to find the binding energy in kJ/mol. Ultimately, the user is seeking clarity on the conversion process to finalize their 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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