To balance the following chemical equation, the values of the coefficients x, y and z must be respectively: x Zn ( NO_3)_2 → Δ y ZnO +z NO_2+ O_2

To balance the following chemical equation, the values of the coefficients $\displaystyle x, y$ and $\displaystyle z$ must be respectively: \[x \mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2} \xrightarrow{\Delta} y \mathrm{ZnO}+z \mathrm{NO}_{2}+\mathrm{O}_{2} \]