How would you balance the following chemical equation:
A) Place a 2 in front of Ca2
B) Place a 2 in front of O2
C) Place a 2 in front of CaO
D) It is already balanced
![How would you balance the following chemical equation A Place a 2 in front of Ca2 B Place a 2 in front of O2 C Place a 2 in front of CaO D It is already balance class=](https://us-static.z-dn.net/files/d61/7c46948d17a2b131e3c0cdc8b0049153.png)