It would be volume.
Volume is not an intensive property because it <em>does</em> change as the amount of substance increases or decreases. The rest of the properties are constant no matter the amount of substance.
I heard that most of the time water found in watersheds aren’t usually clean nor safe for drinking, but i know that there are very few that are somewhat safe for drinking. It’s just not usually common to find clean and healthy watersheds though.
The chemical formula of Iron (III) Sulfide is FeSO3. This element or compound has another name which is <span>ferric sulfide or sesquisulfide.</span>