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how much energy in joules is contained in 1 kg of water if its natural deuterium...

how much energy in joules is contained in 1 kg of water if its natural deuterium issued in the fusion reaction 2/3H + 2/1 H -> 1/1H that releases 4.03 MeV. Compare this to the energy obtained from burning 1 kg of gasoline, about 5 x 10^7 J

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