the air pressure in denver, colorado is about 83 percent of the air pressure in miami beach, which is at about sea level. given that the air pressure in miami beach is 760 mm hg and oxygen makes up 21 percent of the air in miami beach, what are the percentage of oxygen and the partial pressure of oxygen in denver? the air pressure in denver, colorado is about 83 percent of the air pressure in miami beach, which is at about sea level. given that the air pressure in miami beach is 760 mm hg and oxygen makes up 21 percent of the air in miami beach, what are the percentage of oxygen and the partial pressure of oxygen in denver? 17.4 percent; 132 mm hg 21 percent; 21 mm hg 21 percent; 132 mm hg 17.4 percent; 21 mm hg