Coal (fuel source)

How much carbon dioxide is released when burning a kilo of coal?


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Burning one kilo of carbon releases about 3.6 kilos of carbon dioxide.

Carbon has an atomic weight of 12. Oxygen has an atomic weight of 16. The oxidation of carbon results in carbon dioxide, atomic weight 44. So 44/12 is 3.667. There are other things in coal besides pure carbon, slight impurities, so in general 1 kg of coal releases about 3.6 kg of CO2.