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April 20, 2014

Homework Help: Chemistry

Posted by Matthew on Monday, December 5, 2011 at 1:29pm.

Calculate the heat (in kJ) required to transform 58.60 g of dinitrogen tetraoxide from a solid at a
temperature of -9.3 C to a gas at 47 C. Report your answer to one decimal place. Data:
Molar mass of dinitrogen tetraoxide, N2O4
= 92.011 g/mol
Melting point = -9.3 C Boiling point = 21C.
Enthalpy of fusion = 14.65 kJ/mol
Enthalpy of vaporization = 38.12 kJ/mol.
Molar heat capacity of the liquid phase = 142.7 J/molK
Molar heat capacity of the gas phase= 77.3 J/molK

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