When oxygen (o2) is passed through an electrical spark (lightning is a good natural source of an electrical spark), ozone (o3) is formed. when the equation is balanced, the coefficient of the ozone

2.

Explanation:

The balanced equation is

3O2 >  2O3.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.