Respuesta :

the first one i believe, CaO
because calcium has a charge of +2 and oxygen has a charge of -2 which makes them balanced

1. CaO

2. tin(IV) sulfide

3. VI

4. ammonium

5. Nothing is wrong with the formula.

6. Cu +

7. reactant

8. yield sign

enjoy ;)

RELAXING NOICE
Relax