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Amount of POC = 35.82 kg moles This answer is same as calculated above.
Now consider that the coal contains 4 % moisture when fired, & combusted with stoichiometric air,
find amount of POC.
Exercise
Orsat analysis of  , and  obtained on combustion of
coal (%, dry basis) C 76, H 5, O 6, N2, S2 and ash 9. Find amount of POC and % excess air.
Ans: 42.93 kg moles and Percent excess air 20%
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