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The ultimate analysis of a coal is 80% carbon, 4% hydrogen, 2% oxygen, and the rest ash. The flue gases are 60 F and 14.7 psia (15.6 C and 101.3 KPa) when sampled and are 80%, nitrogen, 12% carbon dioxide, 7% oxygen and 1% carbon monoxide by volume How much air is required to burn 1lbm (1kg) of coal under these conditions?

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