The enthalpy of formation of gaseous carbon dioxide is −393.5 kj/mol. what is the equation that represents the formation of gaseous carbon dioxide? answer
a. unselected c(s) + o2(g) → co2(g)
b. unselected co(g) + ½ o2(g) → co2(g)
c. unselected co2(s) → co2(g)
d. unselected 2 co(g) + o2(g) → 2 co2(g)