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13 January, 03:52

Which means for obtaining hydrogen from water would require the most energy?

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  1. 13 January, 04:15
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    I think the correct answer would be to electrolyze water (run an electric current through it) to decompose it into hydrogen and oxygen. Assuming 100% efficiency, it is said that it needs about 40kWh per kilogram of water to fully decompose it.
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