Tristan is given the task of studying the compound CO2.

Before he even begins his research, what information can Tristan obtain from the compound's chemical formula alone?

Select all that apply.

1. He can tell that the compound forms molecules.
2. He can tell the compound has two atoms of carbon and two atoms of oxygen.
3.He can tell that the compound forms networks.
4. He can tell the compound contains one atom of carbon and two atoms of oxygen.