How much energy is released as 1kg of hydrogen is consumed?

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The discussion focuses on calculating the energy released when 1 kg of hydrogen undergoes fusion, specifically through the reaction of two hydrogen nuclei forming deuterium and a positron. The participant initially calculated the energy using mass difference and the conversion factor of 931.5 MeV, resulting in 25.708 MeV. However, this value differs from the expected energy output of 6 x 1014 J, indicating a miscalculation in the mass values used. The recommendation is to utilize standard isotope values instead of average atomic masses for accurate results.

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15. The following fusion reaction takes place in the sun and furnishes much of its energy:
, where is a positron. How much energy is released as 1kg of hydrogen is consumed? The masses of 1H, 4He, and are, respectively, 1.007825, 4.002604, and 0.000549 u, where atomic electrons are included in the first two values

I do it by finding the difference of mass between the parent nucleus and daughter nucleus and multiply with 931.5MeV. The answer I got is 25.708MeV,which is actually different with the given answer, 6 x 10^14 J. Why?
Which part I have done wrongly?
 
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This might give you a clue:

^{1}_{1}H+^{1}_{1}H\xrightarrow~^{2}_{1}H + p

Try and use standard value for isotopes not the average.
 
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