Calculate the AH for the reaction: 2H,O2(1) → 2H,O(1) + O2(g) using the following chemical equations and their respective enthalpy changes: AH1 = -187.8 kJ AH2 = -571.7 kJ Discussion: Manipulate the two chemical equations so that when they are added together, the resulting chemical equation equals 2H2O2(1) → 2H2O(1) + O2(g). For each chemical equation, you may need to reverse the equation, multiply the equation by an integer, reverse the equation followed by multiplying H2(g) + O2(g) → H2O2(1) 2H2(g) + O2(g) –→ 2H;O(1) the reverse equation by an integer, or do nothing to the equation.

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