What is the binding energy in kJ/mol per nucleons for the formation of nitrogen-15? in kJ/mol? Nucleons = 7 + 8 The required masses (g/mol)...

Binding energy is the energy that binds the nucleus together. It can computed using Einstein's famous mass-energy equivalency equation: 

E = mc^2

where, m is the mass defect and c is the speed of light (approximately 3 x 10^8 m/s)

Mass defect is calculated as the difference between actual mass of the nucleons and the measured mass of nucleus. In other words,

mass defect, m = number of protons x mass of proton + number of neutrons x mass of neutrons - actual mass of nucleus

= 7 x 1.00783 + 8 x 1.00867 - 15.00011 = 0.1241 g/mol = 1.241 x 10^-4 kg/mol

Thus, binding energy = mc^2

= 1.241 x 10^-4 kg/mol x (3 x 10^8 m/s)^2 

= 1.1169 x 10^13 J/mol

= 1.1169 x 10^10 kJ/mol

In terms of per nucleon, 

binding energy = 1.1169 x 10^10 kJ/mol / (7 + 8) nucleons

= 7.446 x 10^8 kJ/mol/nucleon.

Hope this helps.