29. Standard heat of formation of Al2O3 (s) - 1675 kJ/mol. Calculate the heat of formation of Al2O3(s) at 600 K using the following expressions for molar heat capacities:
СрAl=20.67 12.39*10-3T J/(mol*K)
СрO2=31.46 3.39*10-3T -3.77*105T J/(mol*K)
СрAl2O3=114.45 12.89*10-3T -34.31*105T-2 J/(mol*K)

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