Oxygen
Oxygen
Typically, the air you breathe is comprised of 18 to 21 percent Oxygen.
men
20% of 20% is 4% (=0.04)
Oxygen
oxygen is 20% of the air you breathe
Oxygen
20.95% is oxygen
Oxygen is the second most common/abundant gas in the air that we breathe. Nitrogen is the most abundant gas in the air we breathe. The composition of air is often treated as 79 mole or volume percent N2 and 21 mole or volume percent O2.
In 2006, about 20 percent from natural gas
Breathe in air ,mainly Nitrogen80% and 20% Oxygen Breathe out Carbon dioxide and Nitrogen
Oxygen is the second most common/abundant gas in the air that we breathe. Nitrogen is the most abundant gas in the air we breathe. The composition of air is often treated as 79 mole or volume percent N2 and 21 mole or volume percent O2.
Nitrogen which makes up about 78 percent of the atmosphere.
Oxygen
when you breathe out,the gas that is emitted is
we breathe out a gas called carbon dioxide