Octane (c8h18) is burnt with dry air in a steady-flow constant pressure combustion system at a pressure of 15 bar and an equivalence ratio of 0.666. the fuel enters the combustion chamber as liquid at 25°c, whilst the air enters at a temperature of 600 k. the product s leaving the combustion chamber are in equilibrium at a temperature of 1800 k, and consist solely of n2, o2, h o, co no write down the stoichiometric and actual combustion equations, and determine the concentration of nitric oxide (no) in the products of combustion. calculate the heat transferred from the combustion chamber during combustion per unit mass of fuel. why might the concentration of nitric oxide in the exhaust differ from the equilibrium prediction?