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(A) The nuclear fusion reaction is: $4(_2He^4) 	o _8O^{16} + Q$.Initial mass of $4$ helium nuclei $= 4 	imes 4.0026 \, a.m.u. = 16.0104 \, a.m.u.$Fi

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(A) The nuclear fusion reaction is: $4(_2He^4) 	o _8O^{16} + Q$.Initial mass of $4$ helium nuclei $= 4 	imes 4.0026 \, a.m.u. = 16.0104 \, a.m.u.$Final mass of $1$ oxygen nucleus $= 15.9994 \, a.m.u.$Mass defect $\Delta m = (16.0104 - 15.9994) \, a.m.u. = 0.0110 \, a.m.u.$Energy released $Q = \Delta m 	imes 931 \, MeV/a.m.u.$$Q = 0.0110 	imes 931 = 10.241 \, MeV \approx 10.24 \, MeV$.

If all the helium in a star is converted into oxygen in its core,the energy released per oxygen nucleus is...........$MeV$?
[Mass of $He = 4.0026 \, a.m.u.$,Mass of $O = 15.9994 \, a.m.u.$]

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If all the helium in a star is converted into oxygen in its core,the energy released per oxygen nucleus is...........$MeV$?[Mass of $He = 4.0026 \, a.m.u.$,Mass of $O = 15.9994 \, a.m.u.$]