Answer:
120 mm Hg
Explanation:
Given that, Â
Height = 8022 ft/2445 m
Atmospheric pressure = 570 mm Hg
In order to calculate the partial pressure of oxygen, at first, it is required to calculate the mole fraction of Oxygen.
Mole fraction of Oxygen = % of Oxygen in the air
                     = 20.95 % = 0.2095
Now, we know that,
⇒ Partial pressure of oxygen = Total pressure × mole fraction of Oxygen
                        = 570 × 0.2095
                        = 119.415 mm Hg
Therefore, the partial pressure of oxygen in Vail is approximately 120 mm Hg.