1. (a) Determine the adiabatic flame temperature for constant-pressure combustion of a stoichiometric ethane-air mixture assuming reactants at 298 K, no dissociation of the products, and constant specific heats evaluated at 298 K. (b) Determine the adiabatic flame temperature for constant-volume combustion of a stoichiometric ethane-air mixture assuming reactants at 298 K, no dissociation of the products, and constant specific heats evaluated at 298 K. Also, determine the final pressure.