Identify the chemical formula that represents a compound. Check all that apply. Na2co3, co, n2,03, c12

The chemical formulas that represent compounds are:

- Na2CO3: Sodium carbonate
- CO: Carbon monoxide

The following options do not represent compounds:

- N2: Nitrogen gas
- 03: Not a valid chemical formula (likely a typo)
- C12: Not a valid chemical formula (likely a typo)