measurements show that the enthalpy of a mixture of gaseous reactants increases by 373 kJ...

Measurements show that the enthalpy of a mixture of gaseous reactants increases by 373. kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that - 173. W of work is done on the mixture during the reaction. Calculate the change in energy of the gas mixture during the reaction. Round your answer to 3 significant digits is the reaction exothermic or endothermic? exothermic endothermic