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

User BCarpe
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1 Answer

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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.
User Akdom
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