A gaseous fuel composed only of CH4 and C2H6 is burned in a combustion chamber. The following data are reported regarding operation: Gaseous Fuel Temperature : 25C Fuel Pressure : Atmospheric Combustion Air Temperature : 25C Air Pressure : Atmospheric Stack Gas Temperature : 205C Stack Pressure :8cmHOdraft Orsat Analysis: CO27.87% CO0.87% O26.85% N284.41% The barometer reads 756mmHg. The combustion air is saturated with water vapor. Calculate; a) The composition of the fuel gas, b). The percentage of excess air, c) The dew point temperature of the stack gas, d) The volumetric ratio of the wet stack gas to the saturated air