How to write a balanced chemical equation for the standard formation reaction of liquid octanol?

To write a balanced chemical equation for the standard formation reaction of liquid octanol form the octanol from its elements - C, H, and O.

The standard enthalpy of formation of a compound is the change in enthalpy when 1 mol of the compound is formed from its constituent elements. All substances must be in their most stable states at 100 kPa and 25 °C.

write a thermochemical equation for the formation of 1 mol of octanol.

8C (s) + 9H₂ (g) + ½O₂ (g) → C₈H₁₇OH (l)