why does cold air contains more oxygen than warm air?

Question

ive heard that cold air contains more oxygen than warm air. why is this?

Answer 1

it is more dense, so there are more molecules per unit volume

Answer 2

mmmmm its interesting, if you fill a bottle with the same volume of gas and you warm and cold the bottle the number of molecules of oxygen is the same because the number os atoms doesnt change.

-But if you fiil the bottle with warm air and other with the cold air the numbers of molecules of oxygen is lower in the warm than in the cold bottle because at lower temperature the number of molecules per volume is lower and you need more molecules for cover the same volume of the bottle. In the warm gas the molecules are so far than in cold.

Is the law of gases

n = P.V / R T

n = number of mols of the gas
P= Presion
V= volume
R = constant
T= temperture at kelvins grade

at the same volume and presion at more temperature low mols of gas
and at the same conditions at low temperature more mols of gas per volume

Answer 3

chilly air is denser than warmth air, so it incorporates no longer in problem-free words extra oxygen, yet besides extra nitrogen, carbon dioxide, and different hint gases alongside with argon. the reason chilly air is denser is that the molecular action is way less lively, so the air has a lot less resistance to stress, causing it to contract right into a smaller quantity.

Answer 4

No, not really as along as the barometric pressure is the same.
About 21% in both cases...

Answer 5

when things are cold the molecules are less active and there fore more compact,