At higher temperatures, the density of air is less.In other words, as the altitude increases the density decreases. For example, the density of air is less in hilly areas than in tropical area. At higher altitudes, the density of air is less.Also, at 70 degree F (Fahrenheit) and 14.696 psi (per square inch), the density of dry air is about 0.74887 lbm/ft.Furthermore, the density of dry air at 20-degree celsius and 101.325 kPa is 1.2041 kg/cubic meter.Additionally, the IUPAC standard of temperature and pressure uses dry air density of 1.2754 kg/cubic meter (at 0 degrees C and 100 kPa).If we talk about other units then it is 1225.0 gram per cubic meter (g/m 3), 0.0765 lb./ (cu ft.), or 0.0023769 slug/ (cu ft.) Also, this is the value according to the International Standard Atmosphere (ISA). The density of air is about 1.225 kilogram per cubic meter (kg/m 3) at 15 degree Celsius and at sea level.Also, the density of air is not constant. Value of density of airĭry air has a density of 1.29 gram per litre at 0 degree Celsius (32 degrees Fahrenheit) at average sea level. Furthermore, most of the air contains a lot of water vapor which makes it denser than cited value. And so, dry air is less dense than the cited value most of the time. Also, at sea level, this is a freezing temperature. Usually, the units in which the density of air is measured is the Standard Temperature and Pressure (STP).įurthermore, STP is one atmosphere of pressure at 0 degree Celsius. The density of air depends upon the atmospheric temperature, pressure and humidity. The Greek letter ρ (rho) is used to denote it. The density of air refers to the mass per unit volume of atmospheric gases. Measures Of Central Tendency and Measures of Dispersion.It also contains dust, pollen, and spores. In general, this mixture of air primarily contains nitrogen, oxygen, carbon dioxide, water vapor, ozone and inert gases such as argon, helium, krypton, xenon etc.
It is a mixture of many gases that make the atmosphere of the earth.
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