21% of inhaled air is oxygen. Identify how much oxygen there is in exhaled air.<1%4%17%78%I'm not sure

0.04% of inhaled air is carbon dioxide. Identify how much carbon dioxide there is in exhaled air.<1%4%17%78%I'm not sure

Calculate the mass percentage of oxygen in dry air.Express your answer with the appropriate units.

The given table shows the percentage of oxygen gas in inspired and expired air.Oxygen inInspired Air (%) Expired Air (%)21.0 16.4The difference in the percentage of oxygen gas is due to itsA. storage in lung tissues.B. non-reactivity with the blood.C. liberation as a metabolic waste.D. utilisation in energy production

If the air in a container contains 92.94% oxygen, what is the partial pressure of oxygen in the container if the total pressure 28.84 atm?

The % oxygen by mass of a Group 2 oxide is 39.7%. Name the Group 2 element.Group of answer choicesMgSrBaCaBe