help with these please kJ/mol What is the binding energy in kJ/mol Sb for antimony-123? 51...

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help with these please
kJ/mol What is the binding energy in kJ/mol Sb for antimony-123? 51 H+ 726n—-133 SD The required masses (g/mol) are: H= 1.007

Answer 1

Answer #1

Antimony is having atomicnumber 51 andmass 123

henceit contain 51 proton and 72 neutron

Binding Energy = dM* C^2

where dM = mass defect =Theoretical mass - Observed mass /s

c= velocity of light = 3*10^8 m

Theoretical mass = 122.9041

Observed mass = 51*1.00783 + 72*1.00867 = 124.02357

hence mass defect = 124.02357 -122.9041 = 1.11947 g

BE = 1.11947 *10^-3 kg* (3*10^8 m/s)^2 = 1.0075*10^14 J/mol

BE = 1.0075 * 10¹¹ kJ/mol

(1kJ = 1000J)

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Answer 2

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