He 0.1786 g/L O2 1.429 g/L N2 1.251 g/L
Helium
Helium molecules are lighter than most air molecules in the atmosphere (mostly nitrogen and oxygen) therefore they are prone to rise while heavier molecules move downward.
The concentration of helium is increased in some gas mixtures to reduce the partial pressure of oxygen because helium is a low-density gas that is less soluble in the blood than nitrogen. By replacing nitrogen with helium, the overall density of the gas mixture is reduced, which helps to decrease the work of breathing. This is particularly beneficial in diving situations, where high pressures can increase the risk of nitrogen narcosis and oxygen toxicity.
The molecular mass of helium is 4. The molecular mass of nitrogen, the most common component of air, is 28. Since all gases take up about the same amount of space per mole at a given temperature and pressure, helium is about 7 times less dense than nitrogen, and oxygen, the second most common constituent of dry air, is even more dense than nitrogen.
Helium
He 0.1786 g/L O2 1.429 g/L N2 1.251 g/L
Helium
Helium molecules are lighter than most air molecules in the atmosphere (mostly nitrogen and oxygen) therefore they are prone to rise while heavier molecules move downward.
why is the temperature and the pressure important when giving the density of oxygen and nitrogen
helium
The concentration of helium is increased in some gas mixtures to reduce the partial pressure of oxygen because helium is a low-density gas that is less soluble in the blood than nitrogen. By replacing nitrogen with helium, the overall density of the gas mixture is reduced, which helps to decrease the work of breathing. This is particularly beneficial in diving situations, where high pressures can increase the risk of nitrogen narcosis and oxygen toxicity.
nitrogen,Helium,oxygen
nitrogen,Helium,oxygen
With helium, oxygen, and nitrogen.
hydrogen helium oxygen nitrogen phosphorus aluminium nickel calcium barium magnesium oxygen sulphur helium neon tin mercury
oxygen nitrogen hydrogen helium neon