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Dinitrogen is mostly unreactive at room temperature, ... but with 80.8% of the density (the density of liquid nitrogen at its boiling point is 0.808 g/mL), ...
Nitrogen frost has a density of 0.85 g cm −3. [49] As a bulk material the crystals are pressed together and density is near that of water. It is temperature dependent and given by ρ = 0.0134T 2 − 0.6981T + 1038.1 kg/m 3. [48] The volume coefficient of expansion is given by 2×10 −6 T 2 − 0.0002T + 0.006 K −1. [48]
The temperature of liquid nitrogen can readily be reduced to its freezing point −210 °C (−346 °F; 63 K) by placing it in a vacuum chamber pumped by a vacuum pump. [2] Liquid nitrogen's efficiency as a coolant is limited by the fact that it boils immediately on contact with a warmer object, enveloping the object in an insulating layer of ...
Compared to other oxidisers, it is much less toxic and more stable at room temperature, making it easier to store and safer to carry on a flight. Its high density and low storage pressure (when maintained at low temperatures) make it highly competitive with stored high-pressure gas systems. [81]
A Assuming an altitude of 194 metres above mean sea level (the worldwide median altitude of human habitation), an indoor temperature of 23 °C, a dewpoint of 9 °C (40.85% relative humidity), and 760 mmHg sea level–corrected barometric pressure (molar water vapor content = 1.16%). B Calculated values *Derived data by calculation.
Density: 2.109 g/cm 3 (16 °C) ... It is a source of nitrogen, ... Potassium nitrate has an orthorhombic crystal structure at room temperature, ...
For carbon dioxide at 400 K, the density increases almost linearly with pressure. Many pressurized gases are actually supercritical fluids. For example, nitrogen has a critical point of 126.2 K (−147 °C) and 3.4 MPa (34 bar). Therefore, nitrogen (or compressed air) in a gas cylinder above this pressure is actually a supercritical fluid.
Temperature and salinity also affect the proportion of ammonium [NH 4] +. The latter has the shape of a regular tetrahedron and is isoelectronic with methane. The ammonia molecule readily undergoes nitrogen inversion at room temperature; a useful analogy is an umbrella turning itself inside out in a strong wind.