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Calculate the enthalpy of combustion of methyl alcohol at 298 K from the following data
`{:("Bond",C-H,C-O,O-H,O=O,C=O),("Bond Enthalpy" (kJ mol^(-1)),414,351.5,464.5,494,711):}`
Resonance energy of `CO_(2)=-143" kJ mol"^(-1)`
Latent heat of vaporisation of methyl alcohol `=35.5" kJ mol"^(-1)`
Latent heat of vaporisation of water `=40.6" kJ mol"^(-1)`.

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The correct Answer is:
`-669.7" kJ mol"^(-1)`
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