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How does partial pressure of oxygen change as altitude changes?
Wiki User
∙ 14y ago
The percentage of oxygen in the air is for the most the same in the entire atmosphere.
It is only in the very high altitudes that the percentage of oxygen actually diminishes. This because it is heavier than the helium and hydrogen that is up there.
What matters however is the pressure of the air.
At high altitude you breathe less oxygen because pressure is lower.
At low altitude you breathe more oxygen due to higher pressure.
The pressure of the atmosphere drops by approximately 50% every 18.000 feet (5.600 Meters, 5.6 Kilometer's)
Oxygen, being a gas, exerts a partial pressure, which is determined by the prevailing environmental pressure. At sea level, the atmospheric pressure is 760mmHg, and oxygen makes up 21% (20.094% to be exact) of inspired air: so oxygen exerts a partial pressure of 760 x 0.21 = 159mmHg.
The partial pressure does not actually change much at all with altitude since the percentage of oxygen remains the same.
Our body however (with altitude) utilizes less oxygen because there is less of it and this effectively reduces partial pressure of oxygen in our bodies.
Read more on related link down below.
Wiki User
∙ 14y ago
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Does melting point changes from altitude to altitude?
Yes, it does. It is do because with change in altitude their is change in temp. and pressure which also changes the melting point. The change in melting point could be small to large depending upon change in conditions at different altitudes.
How does altitude affect phase change?
The change in pressure is highly affected by altitude.
What happens to air pressure's rate of change as altitude increases?
The rate of change of air pressure as a function of increasing altitude decreases with increasing altitude.
As altitude increases how does air pressure change?
Increased altitude means decreased air pressure.
How does barometric pressure change with altitude?
Because pressure decreases as you go up in altitude and increases when you go down in altitude. Hope this helped!
Does melting point changes from altitude to altitude?
Yes, it does. It is do because with change in altitude their is change in temp. and pressure which also changes the melting point. The change in melting point could be small to large depending upon change in conditions at different altitudes.
How does air pressure change as altitude change?
Increased altitude means decreased air pressure.
How does altitude affect phase change?
The change in pressure is highly affected by altitude.
What happens to air pressure's rate of change as altitude increases?
The rate of change of air pressure as a function of increasing altitude decreases with increasing altitude.
As altitude increases how does air pressure change?
Increased altitude means decreased air pressure.
Does air pressure and temperature change with altitude?
Yes; the pressure and temperature decreases with higher altitude.
How does barometric pressure change with altitude?
Because pressure decreases as you go up in altitude and increases when you go down in altitude. Hope this helped!
How does air pressure change in the atmosphere as the altitude change?
By farting
How does high altitude air density change when near the equator where there are large temperature and humidity swings?
density changes as the altitude changes.
What could cause a change in air pressure?
Altitude
Can air pressure falls drastically at high altitude?
Air pressure falls of as one gains altitude. At high altitude the air pressure is very low but it does not "falls drastically", which implies a sudden change.
Does melting point change from altitude to altitude?
The melting point of a substance does change with altitude. All due to atmospheric pressure, makes different elements behave differently.
