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Calculate the Standard Enthalpy Change for the Reaction 2C8H18(l)

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Calculate the standard enthalpy change for the reaction 2C8H18(l) + 21O2(g) → 8CO(g) + 8CO2(g) + 18H2O(l) . Given:
2C8H18(l) + 25O2(g) → 16CO2(g) + 18H2O(l) ΔH° = -11,020. kJ/mol
2CO(g) + O2(g) → 2CO2(g) ΔH° = -566.0 kJ/mol


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