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Enthalpy Change

Hydrogen peroxide decomposes according to the following thermochemical reaction:

H2O2(l) --> H2O(l) + 1/2 O2(g); Delta H = -98.2 kJ

Calculate the change in enthalpy, Delta H, when 1.00 g of hydrogen peroxide decomposes.

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The thermochemical equation tells us that Delta H for the decomposition of 1 mole of H2O2 is ...

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