How much energy is liberated when two moles of 126C atoms are formed from their individual protons, neutrons and electrons? Give your answer in TJ (terajoules), correct to two significant figures and without a unit.
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3
Answer:
mass of neutron =1.008664 u mass of electron =0.00054858 u mass of proton =1.007276 u mass of 1 carbon atom = 12 u Mass d
Explanation:
sorry I know this much answer
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1
Answer:
18TJ
Explanation:
The difference in mass between the individual electrons, protons and neutrons, and the mass of the nucleus is:(6×1.008665+6×1.007276+6×0.000549−12)u=0.09894u
The energy liberated is 0.09894×931.5=92.16261MeV
In two moles of 12-6 C, there are 6.02×10^23×2=1.204×1024 atoms, so the total energy emitted, in JJ, is: 92.16261×106×1.6×10−19×1.204×1024=18TJ
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