Calculate the energy that can be obtained from 1 kg of water through the fusion reaction

2H + 2H 3H + p.


Assume that 1.5 × 10–2% of natural water is heavy water D2O (by number of molecules) and all the deuterium is used for fusion.


Given, 18g of molecules contain 6.023× 1023atoms

1kg of molecules contain atoms


% of deuterium atoms=No. of atoms in 1kg of water× % of deuterium



Energy of deuterium



= 1507mJ


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