![]() Hydrogen is the lightest element with a molar mass of 1 g/mol, while oxygen has 16 g/mol. Thus, the water vapor atom has an molar mass of 18 g/mol, and water vapor is lighter than O 2 with 32 g/mol and N 2 with 28 g/mol. Note! Water vapor in air will dilute the other gases and reduce the total density of the mixture.The vapor in air may saturate to droplets when temperature is decreased or pressure is increased.moist air - temperature and saturation pressure.Humid air containing water molecules as liquid - droplets - may be more dense than dry air or humid air containing water only as vapor. ![]() Air Psychrometrics - Moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content.Material Properties - Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.Fluid Mechanics - The study of fluids - liquids and gases.Involving velocity, pressure, density and temperature as functions of space and time.Gases and Compressed Air - Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves.Air - Composition and Molecular Weight - Dry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.Pressure and Temperatures - Air density at pressure ranging 1 to 10 000 bara (14.5 - 145000 psi) and constant selected temperatures. ![]()
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