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Hydrogen is a possible energy storage molecule. It can be made by dissociating some molecules. How much heat is needed to make 1 kg of

Hydrogen is a possible energy storage molecule. It can be made by dissociating some
molecules. How much heat is needed to make 1 kg of H2 from water molecules or from
methane? In the latter, you can assume that the C will form graphite. Last, if methane reacts
with O2 and produces H2 and CO2. Explain in detail what you compute. (Extra: if electricity
costs 0.1 eur/kWh, what is the minimum cost of 1 kg of H2 in the two first cases? This ignores
the other production costs. You get 1 extra point of this.)

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