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Oxygen reacts with the dipeptide glycylglycine [C4H8N2O3(s)] to form urea [CH4N2O], carbon dioxide and water:

3O2(g) + C4H8N2O3 (s) -> CH4N2O (s) + 3CO2(g) + 2H2O(l)

At T=298.15 K and 1.00atm, solid glycylglycine has the following thermodynamic properties:
DeltaGf= -491.5 kJ/mol DeltaHf= -746.0 kJ/mol S= 190.0 J/mol-K
i) Calculate DeltaGr at T=298K and T=310K. State any assumptions you make

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