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

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

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

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

For the process, CO_2(s)rarrCO_2(g) :

At 25^(@)C and 1 atm, the standard reaction enthalpy for the reaction C(graphite, s) +O_(2)(g)toCO_(2)(g) is the _____ of CO_(2)(g) .

What is meant by reaction rate ? Give its symbolic expression expression and units for the reaction CO(g)+NO_(2)(g)toCO_(2)(g)+NO(g)