Nitrogen is lighter than oxygen
nitrogen is lighter than oxygen
Helium
Helium is lighter (less dense) than oxygen & nitrogen.
In fact there are seven elements lighter than oxygen: hydrogen, helium, lithium, beryllium, boron, carbon and nitrogen.
No. The atmosphere is roughly 80% N2, 20% O2, and about 1% of other trace gases. The molecular mass of N2 is about 28, the molecular mass of O2 is about 32. So, no O2 is not lighter than air, it is slightly heavier.
Water vapor is a gas so it is in the air. Nitrogen and nitrogen are in the air too, but there is more nitrogen than anything in the air. I believe it rises because it is lighter, like a balloon filled with helium.
humid air is lighter that an equal volume of dry air at the same temperature.
Hydrogen and Nitrogen. Or oxygen and carbon dioxide, or carbon monoxide.
Oxygen o2 only is slighty heavyer than air. o3(ozone) is around the same weight as o2 ,but the ozone layer is at a hiegher altitude because it is created when o2 come in contact with high amounts of UV rays.
Argon, Carbon Dioxide, Nitrogen, oxygen, hydrogen
NO2, or nitrogen dioxide.