This is just out of curiosity. When copper corrodes, why does it form copper carbonate instead of copper oxide? Instead of reacting with oxygen, it reacts with carbon dioxide in the air. Why?

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

C3h8o3 - glycerol major species present when dissolved in water

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !