In chemistry, a mole is the amount of any substance that contains the same number of particles as in
12.01 g of carbon (C).
16 g of oxygen (O2).
14 g of nitrogen (N2).
18 of hydrogen (H2). .

h

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.