i need step by step and detailed solution. Thank you

2. In an industrial boiler, methane (CH4) is combusted with dry air. The air flow rate is 1.5 times that required for stoichiometric combustion. The air and methane enter the boiler at 25C. Within the boiler, the gases react in a combustion chamber and then pass over a set of heat-exchanger tubes to boil water, before exiting at 227C. The pressure is 1 bar throughout Write down the chemical equation for the combustion process. -10 marks- How much heat is extracted from the combustion gases by the heat exchanger, per kmol of methane entering the boiler? -20 marks- What is the chemical equation for the reaction between methane and oxygen that produces only carbon monoxide and water? -10 marks- What further reaction is required to convert the carbon monoxide to carbon dioxide, without any other products? -10 marks