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Problem- If the enthalpies of formation of carbon dioxide and water are -393.509 kJ/mol and -285.83 kJ/mol respectively, what is the enthalpy of formatino of C10H8(s) in kJ/mol?

C10H8(s) + 12O2(g) ? 10CO2(g) + 4H2O (l) ?Ho = -5156.1 kJ

I am not able to get the accurate answer please help me

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