3. Given the following AH° values, H2(g) + 202(g) → H20(1) H,O2(1) → H2(g) + O2(9) AH° = -285.8 kJ AH° = 187.6 kJ Calculate the standard enthalpy of formation for the reaction H2O2(1) → H20(1) + 202(9),

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