Question

what is the amount of oxygen(02) PRESENT IN THE AIR​

Answer 1

Answer:

please mark as brainliest

Explanation:

Dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere. So the amount of oxygen present in air is 20.95%

Answer 2

Answer:

21%

Explanation:

The amount of oxygen present in the air is 21%.