Problem: For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under standard conditions. C8H18 + 25/2(O2) → 8CO2 + 9H2O     ΔH= -5113.3 kJWhat is the standard enthalpy of formation of this isomer of C8H18(g)?

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For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under standard conditions. 

C8H18 + 25/2(O2) → 8CO2 + 9H2O     ΔH= -5113.3 kJ

What is the standard enthalpy of formation of this isomer of C8H18(g)?

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