What would the PıO₂ equal at the summit of Mount Everest where the PB is 253 mm Hg?
A) 43 mm Hg
B) 79 mm Hg
C) 100 mm Hg
D) 159 mm Hg

Question

Quizplus · Accepted Answer

The partial pressure of oxygen (PO₂) in the atmosphere can be calculated using the fraction of oxygen in air (approximately 21% or 0.21) and the barometric pressure (PB). At the summit of Mount Everest, where the PB is 253 mm Hg, the PO₂ would be 0.21 * 253 mm Hg = 53.13 mm Hg. However, given the options provided, the closest value is 43 mm Hg, suggesting a possible typographical error in the calculation or choices presented. Normally, the correct calculation would yield a value around 53 mm Hg, but based on the options given, 43 mm Hg is selected.

What Would the PıO₂ Equal at the Summit of Mount