A combustion chamber is used to burn a fuel mixture consisting of methane and ethane. The fuel enters the chamber at a temperature of 25C and a pressure of 1 atm. Dry air enters the chamber at a temperature of 200C and a pressure of 1 atm. Excess air is used for combustion. Assume the air to be 21.0 mole% O2 and the balance NThe flue gas exits at a temperature of 800C and a pressure of 1 atm. Analysis of the flue gas has the following composition in mole percent:0.89% 0,7.93% CO2, 13,96% H20,4.09% O2 and the balance N What is the mole percent of ethane in the fuel mixture? % What is the percentage by which dry air is fed in excess? % A combustion chamber is used to burn a fuel mixture consisting of methane and ethane. The fuel enters the chamber at a temperature of 25C and a pressure of 1 atm. Dry air enters the chamber at a temperature of 200C and a pressure of 1 atm. Excess air is used for combustion. Assume the air to be 21.0 mole% O2 and the balance NThe flue gas exits at a temperature of 800C and a pressure of 1 atm. Analysis of the flue gas has the following composition in mole percent:0.89% 0,7.93% CO2, 13,96% H20,4.09% O2 and the balance N What is the mole percent of ethane in the fuel mixture? % What is the percentage by which dry air is fed in excess? %