a major component of which is octane

CH3CH2CH2CH2CH2CH2CH2CH3. Octane has a vapor pressure of 13.95 torr at 25 oC and a vapor pressure of 144.78 torr at oC. Use these data and the equation in part (a) to calculate the heat of vaporization of octane.
(c) By using the equation in part (a) and the data given in part (b)

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