2. Calculate the combustion temperature of a gaseous oxygen-hydrogen mixture whose mass ratio is 3: 1 (02: H2). Since this means a considerable excess of hydrogen over the stoichiometric proportion, assume that the product temperature will be low enough to prevent dissociation. The temperature of the reactants entering the chamber is 298 K, and the heat transfer to the coolant from the chamber walls is 8.4 kJ per mole of product. As a first app