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What is the total energy released (in erg g −1 ) if a composition consisting initially...

What is the total energy released (in erg g −1 ) if a composition consisting
initially of pure 12 C burns to pure 24 Mg. The binding energies of 12 C and 24 Mg are 92.162
MeV and 198.258 MeV, respectively.

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Answer #1

total energy released = mass of Mg x binding energy of Mg - mass of C x binding energy of C

= (23.985 x 198.258) - (12 x 92.162)

= 3649.27413 MeV x (1.602 x 10^-6 erg/MeV)

= 0.005846 erg

Total energy released per g of C

= 0.005846 erg / 12 g

= 0.0004872 erg/g

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