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    Whats the equation of the complete combustion of carbon? I thought it'd be:
    C(s)+O2(g) =CO2(g)

    but I thought the products of complete combustion are water and carbon dioxide so I was wondering where the water comes from or if its just carbon dioxide.

    If it was the combustion of a hydrocarbon then you would have water as a product but if you are combusting carbon then the only product is CO2. If you think about the definition of enthalpy change combustion: energy change when one mole of fuel completely reacts with oxygen under standard conditions. There is no Hydrogen involved in this fuel so no water is produced
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