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How to calculate heat from enthelpy of reaction
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[QUOTE="Borek, post: 6101533, member: 23711"] Actually I have just checked and the enthalpy as listed is per mole of acetylene reacting. IMHO this is ambiguous and should be explained more precisely. Enthalpy can be given "per mole of a reacting substance" or "per mole of a reaction as written" (yes, technically there is no such thing as "mole of reaction", but it is nothing unusual to have it written like that). No wonder we were both wrong. The answer should contain 2 significant digits, so (already correcting the mistake we did) 2.5×10[SUP]3[/SUP] kJ, or just 2.5 MJ. Not that it matters much, but it is in general a mistake to present the number as if it was highly accurate when it is not. [/QUOTE]
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How to calculate heat from enthelpy of reaction
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