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Question 19 Which of the following does NOT describe an exothermic chemical reaction? O The temperature of the surroundings increases. O Heat is released by the reaction The potential energy of the reactants is higher than the potential energy of the products O The enthalpy change (AH) is a positive value Question 20 itages and Dis... DEFM200 Ass Consider the following thermochemical equation for the combustion of propane C3H8(1)+302(g) → 3C0₂(g) + 4H₂O(g) AH = 2220 kJ Determine the enthalpy change when 0.350 mol CaHg reacts O-400 kJ O-17.6 kJ O-34,300 kJ O-777 kJ -0.634 KJ honolock.com is sharing your schem