A. What is the percentage of oxygen in (...

A. What is the percentage of oxygen in (a) Inspired air at (i) Sea level (ii) 10,000 ft high altitude (b) Expired air, (c) Alveolar air?

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A. (a) (i) `O_(2)` in inspired air at sea level 20.94% (ii) `O_(2)` at 10,000 ft high altitude = 20.5%, (b) `O_(2)` in expired air =16.4%, (c) `O_(2)` in alveolar air = 14.2% .

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