One kmol of ethane gas (ch4) is burned completely with 20% excess air during a steady flow 25°c the water in the products exits in the liquid form combustion process. the fuel and air enter the combustion chamber at 25*c, and the products leave at a) determine the mole number of the products and the reactants, and write the reaction. (15 b) write the energy balance equation (complete form with all the terms for each reactant and points) product) and determine the heat rejected in this process, in kü/kmol of fuel.