The burning of a hydrocarbon fuel (CHx)n in an automotive engine results in a dry exhaust gas analysis, percentage by vo

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The burning of a hydrocarbon fuel (CHx)n in an automotive engine
results in a dry exhaust gas analysis, percentage by volume, of: 11
% CO2, 0.5 % CO, 2 % CH4, 1.5 % H2, 6 % O2 and 79 % N2. Write the
combustion equation and find (a) the actual air-fuel ratio; (b) the
percent excess or deficient air used; (c) the volume of the
products (at 1 300 C and 100 kPaa) in cubic meter per kilogram of
fuel.
Use Mass Balance
Please complete the answer with correct solution