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4.8 g of C (diamond) on complete combust...

`4.8 g` of `C` (diamond) on complete combustion evolves`1584 kJ` of heat. The standard heat of formation of gaseous carbon is `725 kJ//mol`. The energy required for the process
C(graphite) `rarr` C(gas)
C(diamond) `rarr` C(gas) are

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