* State symbols are used to denote the physical state of a substance:
* (s) - solid
* (l) - liquid
* (g) - gas
* (aq) - aqueous solution (dissolved in water)
* Molten iron(III) oxide is a liquid: It's in a liquid state because it's been heated to a high enough temperature to melt.
Therefore, you would simply write the chemical formula for molten iron(III) oxide as:
Fe₂O₃ (l)