How many percent of oxygen and carbon dioxide in the atmosphere?

Answer 1

The air we breath, at sea level, consists of 21% Oxygen, 78% Nitrogen and the remaining 1% mixed Gases. The human body requires only 4% Oxygen to sustain life, therefore, we breath out approxamately 17% Oxygen and the balance is Carbon Dioxide. =Note: This is why CPR works so well - when ventilating a patient, we are giving that patient 4 times the required Oxygen, and because you're blowing into the lungs, that positive pressure, makes sure that Oxygen creeps into all areas of the lungs.=

Answer 2

The average concentration of oxygen in the air you breath is about 21%.

The average concentration of carbon dioxide in the air you breath is a bit less than 400 ppm (parts per million) or a bit less than 0.04%

Answer 3

The atmosphere is about 20% oxygen, about 79% nitrogen, about 1% Argon, and a fraction of a per cent of a number of other gases, including 400 ppm (parts per million) of carbon dioxide. One per cent is 10,000 ppm, so 400 ppm is less then 1%. It is 0.04%.

This seems like a very small amount, but the process is similar to the way a catalyst works. A carbon dioxide molecule absorbs infrared radiation on its way out. It then either converts it to heat or re-radiates it in a new direction. Either way, the IR energy is probably trapped on earth and the carbon dioxide molecule is free to absorb another infrared photon.

Answer 4

• Oxygen makes up about 20% of the atmosphere.
• Carbon dioxide makes up about 0.04% of the atmosphere.

Answer 5

Oxygen is 20,946 % and carbon dioxide is 0,039445 %.

Answer 6

21% oxygen 0.04% carbon dioxide.

Answer 7

20%