Calculate AH,° in kJ/mol for hydrogen peroxide, H2(g) + O2(g) → H2O2(), from these thermochemical equations: 2 H2(g) + O2(g) –→ 2H2O(1) AHf° = -570.4kJ 2H2O2(1) → 2H20(1) + O2(g) AH;° = -195.8kJ

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