Another factor that makes inventory different from other assets is that its usefulness can actually diminish over time. Cash, for instance, maintains its usefulness to you over time.
Lethal injection is done by using three chemicals. The chemicals are usually sodium thiopental (an anesthetic), pancuronium bromide (used to paralyze the person being injected), and potassium chloride (to stop the heart so that the person being injected dies).
Lethal injection gained popularity in the late 20th century as a form of execution intended to supplant other methods, notably electrocution, hanging, firing squad, gas chamber, and beheading, that were considered to be less humane. It is now the most common form of execution in the United States.