9. A calorimeter experiment was performed and AHrxn for the following reaction was determined as follows: 2 Als) + Fe2O3(s) Al2O3(s) + 2 Fe(s) AHrxn = -851.5 kJ Calculate the energy released as heat when 15.00 grams of Al(s) is combined with excess Fe2O3(s) in the previous reaction under standard conditions. Assume all of the Al(s) reacts and the energy is transferred only in the form of heat. 8. For the following reactions at constant pressure, predict if AH > AU, AH