If an albuterol inhaler contains 20mg of albuterol, how many inhalation doses can be delivered if each dose contains 90mcg?
20 mg = 20 x 10^-3 g
90 mcg = 90 x 10^-6 g
no. of doses = 20 x 10^-3 / 90 x 10^-6 = 222
90 mcg = 90 x 10^-6 g
no. of doses = 20 x 10^-3 / 90 x 10^-6 = 222