The heat of formation of gaseous octane (C8H18(g)) is -49.79

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The heat of formation of gaseous octane (C8H18(g)) is -49.79 kcal/mole. (a) Calculate the energy required to form one mole of gaseous octane, (b) Estimate the heat of formation of gaseous octane, and (c) compare your estimation with the actual enthalpy of formation of the gaseous octane and explain your observation.

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