Please Help For each of the following questions, determine whether the compound is ionic or covalent and name it appropriately.

1) CO3 _

2) P2O5 _

3) NH3 _

4) SO4 _

5) CO2 _

6) GaCl3 _

7) MgBr2 _

8) BaS _

9) CO _

10) Na2S _

For each of the following questions, determine whether the compound is ionic or covalent and write the appropriate formula for it.

11) dinitrogen trioxide _

12) nitrogen tribromide _

13) carbon tetrahydride _

14) lithium nitride_

15) phosphorus trifluoride _

16) potassium oxide _

17) aluminum chloride_

18) silicon tetrafluoride _

19) calcium telluride _