For the process `CO_(2(s)) rarr CO_(2(g))`

At the sublimation temperature, for the process CO_(2)(S)toCO_(2)(g)

The heat of formation of CO_(2) is -407 kJ/mol. The energy required for the process 3CO_(2)(g) rarr 3C(g) + 2O_(3)(g) is

For the reaction C(s)+O_(2)(g) rarr CO_(2) (g), Deltan value is