A pure saturated hydrocarbon gas at 70°F is burnt in a furnace giving a flue gas containing 10.8% CO2. 3.8% O2 and the rest nitrogen and inerts. The flue gas leaves at 800°F. a. Calculate the atomic ratio, H/C and from this, the formula of the fuel b. Calculate the volumetric ratio of the combustion gas to the fuel gas. c. If the furnace bums 200 lb of fuel per hour, calculate the volume of combustion gases in ft/min.

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