Question 1 1.1) The following was obtained at a volumetric analysis of a certain natural gas after be completely burned with a stoichiometric amount of dry air. Compound CH. H2 N2 02 CO2 % contribution 65 8 18 3 6 Determine the air-fuel ratio for this combustion process 1.2) Briefly explain what is meant by stoichiometric air. How does it influence the combustion process?

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