Search results
Results from the WOW.Com Content Network
ISO TR 29922-2017 provides a definition for standard dry air which specifies an air molar mass of 28,965 46 ± 0,000 17 kg·kmol-1. [2] GPA 2145:2009 is published by the Gas Processors Association. It provides a molar mass for air of 28.9625 g/mol, and provides a composition for standard dry air as a footnote. [3]
An air compressor is used to compress filtered air to high pressure; the high-pressure gas is cooled back to ambient temperature, and allowed to expand to a low pressure. The expanding air cools greatly (the Joule–Thomson effect ), and oxygen, nitrogen, and argon are separated by further stages of expansion and distillation.
A pressure-sensitive nitrogen capsule known commonly as a "widget" allows nitrogen-charged beers to be packaged in cans and bottles. [91] [92] Nitrogen tanks are also replacing carbon dioxide as the main power source for paintball guns. Nitrogen must be kept at a higher pressure than CO 2, making N 2 tanks heavier and more expensive. [93]
In this case, the unit is the centimeter cubed per gram (cm 3 /g or cm 3 ·g −1). To convert m 3 /kg to cm 3 /g, multiply by 1000; conversely, multiply by 0.001. Specific volume is inversely proportional to density. If the density of a substance doubles, its specific volume, as expressed in the same base units, is cut in half.
(near r.t.) 8795 kg/m 3: LNG (at r.t.) 8.79 g/cm 3: CRC (near r.t.) 8.80 g/cm 3: 68 Er erbium; use: 9.066 g/cm 3: WEL (near r.t.) 9066 kg/m 3: LNG (at r.t.) 9.066 g/cm 3: CRC (near r.t.) 9.07 g/cm 3: 69 Tm thulium; use: 9.32 g/cm 3: WEL (near r.t.) 9321 kg/m 3: LNG (at r.t.) 9.32 g/cm 3: CRC (near r.t.) 9.32 g/cm 3: 70 Yb ytterbium; use: 6.90 g ...
The ideal gas equation can be rearranged to give an expression for the molar volume of an ideal gas: = = Hence, for a given temperature and pressure, the molar volume is the same for all ideal gases and is based on the gas constant: R = 8.314 462 618 153 24 m 3 ⋅Pa⋅K −1 ⋅mol −1, or about 8.205 736 608 095 96 × 10 −5 m 3 ⋅atm⋅K ...
pound per cubic foot: pounds per cubic foot: g/cm3: Density: lb/cuin: lb/cu in: 453592.37/16.387064: pound per cubic inch: pounds per cubic inch: g/cm3: Density: lb/cuyd: lb/cu yd: 0.45359237/0.764554857984: pound per cubic yard: pounds per cubic yard: kg/m3: Density: lb/impgal: lb/imp gal: 0.45359237/0.00454609: pound per imperial gallon ...
When given the reduced pressure and temperature, find the given pressure on the x-axis. From there, move up on the chart until the given reduced temperature is found. Z is found by looking where those two points intersect. the same process can be followed if reduced specific volume is given with either reduced pressure or temperature.