Question

c. The approximate percentage of oxygen in the inhaled air​

Answer 1

Answer:

21 percent

So what is air, exactly? It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Answer 2

Answer:

23%is the approximate percentage