Density of Air in Kg M3

The density of air is usually denoted by the Greek letter rho or ρ and it measures the mass of air per unit volume eg. NTP - Normal Temperature and Pressure - defined as 20 o C 29315 K 68 o F and 1 atm 101325 kNm2 101325 kPa 147 psia 0 psig 30 in Hg 760 torr.

Air Properties Chart Air Density

Pure water has its highest density 1000 kgm 3 or 1940 slugft 3 at temperature 4C 392F.

. Density is the ratio of the mass to the volume of a substance. An introduction to density specific weight and specific gravity. For density ρ rho generally in kgm 3 mass m in kg and volume V in m 3For example if you had 100 kg of air that took up a volume of 1 m 3 the density would be 100 kgm 3.

Megagram metric ton per cubic metre Mgm 3 In US customary units density. Gm 3Dry air mostly consists of nitrogen 78 and oxygen 21 The remaining 1 contains many different gases among others argon carbon dioxide neon or heliumHowever the air will cease to be dry air when water vapor appears. The density of air or atmospheric density denoted ρ is the mass per unit volume of Earths atmosphereAir density like air pressure decreases with increasing altitude.

The density of normal concrete is 2400 kgm 3 150 pcf or lbft 3 and the density of lightweight concrete is 1750 kgm 3 110 pcf or lbft 3 Dorf Richard. Typical density of concrete 23 gcm 3 1436 pcf or lbft 3 2300 kgm 3 Brooklyn Public Library Files. Specific weight is the ratio of the weight to the volume of a substance.

Kilogram per cubic decimetre kgdm 3 gram per cubic centimetre gcm 3 1 gcm 3 1000 kgm 3. It also changes with variation in atmospheric pressure temperature and humidityAt 101325 kPa abs and 20 C 68 F air has a density of approximately 1204 kgm 3 00752 lbcu ft according to the. Density of air at 1.

ρ mV 1 where ρ density units typically gcm 3 or lbft 3 m mass units typically g or lb V volume units typically cm 3 or ft 3. Molecular weights can be used to calculate Specific Gravity if the densities of the gas and the air are evaluated at the same pressure and temperature. Liquid water has a density of about 1 kgdm 3 making any of these SI units numerically convenient to use as most solids and liquids have densities between 01 and 20 kgdm 3.

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