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The anthracite coal in Q 1b (ii) was used in a boiler whose dry flue gas composition by volume was determined as; CO28.5%,CO2%,O28% and N281.5%.

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The anthracite coal in Q 1b (ii) was used in a boiler whose dry flue gas composition by volume was determined as; CO28.5%,CO2%,O28% and N281.5%. Taking hfg=2,466kJ/kg ) determine (i) the mass of flue gas per kg of coal burnt [5 marks] (ii) the air to fuel ratio by mass [5 marks]

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