A liquid fuel mixture that is 40% octane (C8H18) and 60%
Chapter 13, Problem 13.26(choose chapter or problem)
A liquid fuel mixture that is 40% octane (\(\mathrm{C}_{8} \mathrm{H}_{18}\)) and 60% decane (\(\mathrm{C}_{10} \mathrm{H}_{22}\)) by mass is burned completely with 10% excess air at \(25^{\circ} \mathrm{C}\), 1 atm, 80% relative humidity.
(a) Determine the equivalent hydrocarbon composition, \(\mathrm{C}_{a} \mathrm{H}_{b}\), of a fuel that would have the same carbon–hydrogen ratio on a mass basis as the fuel mixture.
(b) If the combustion products are cooled to \(25^{\circ} \mathrm{C}\) at a pressure of 1 atm, determine the amount of water vapor that condenses, in kg per kg of fuel mixture.
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