# If the atmospheric pressure on Mt. Everest is one-third the atmospheric pressure at sea level, what is the partial pressure of oxygen on Everest?

Jan 27, 2018

So, if atmospheric pressure is 102 kPa at sea level (just to choose a convenient value), the partial pressure of the oxygen is $102 \times 0.208 = 21.22$ kPa.
On Everest, the total pressure would be 34 kPa (one-third of 102 kPa), and the partial pressure of the oxygen is $34 \times 0.208 = 7.07$ kPa.