Answer:
500 ft3 (14.16 m3) of air
Explanation:
To obtain this oxygen, the person will breathe approxi- mately 500 ft3 (14.16 m3) of air.
By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.
