Automotive air bags inflate when sodium azide NaN3 decomposes. In preparation of the airbag a scientist reacts sodium with nitrogen to obtain sodium azide:
A) Balance the chemical reaction of this process:
___Na (s) + ___N2 (g) → ___NaN3 (s)

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.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".