The lung volume of a 70 kg man at rest changed from 2200 mL to 2700...
The lung volume of a 70 kg man at rest changed from 2200 mL to 2700 mL when he inhaled, while his lungs maintained a pressure of approximately 1.0 atm.
If air is approximately 21% oxygen by volume, calculate how many milliliters of oxygen are inhaled (assuming the lungs are filled completely with air) in 30 seconds if he inhales every 3 seconds.
Homework Answers
Air volume inhaled = 2700 — 2200 = 500 mL
volume of oxygen in air = 500 x (21 / 100 ) mL = 105 mL
This much of oxygen is inhaled in 3 seconds
volume of oxygen inhaled in 30 seconds = 105 x 10 = 1050 millilitres
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