You're asking for the balanced chemical equation for the reaction between zinc (Zn) and oxygen (O2). Here's how to balance it:

Unbalanced Equation:

Zn + O2 → ZnO

Balancing the Equation:

1. Oxygen: There are two oxygen atoms on the left side (O2) and only one on the right side (ZnO). To balance this, place a coefficient of 2 in front of ZnO.

Zn + O2 → 2ZnO

2. Zinc: Now there are two zinc atoms on the right side, but only one on the left. Place a coefficient of 2 in front of Zn on the left side.

2Zn + O2 → 2ZnO

Balanced Equation:

2Zn + O2 → 2ZnO

This balanced equation shows that 2 moles of zinc react with 1 mole of oxygen to produce 2 moles of zinc oxide.