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Что (кто) такое vapour density - определение
RELATIVE DENSITY USED FOR GASES
Vapor density; Vapor Density
vapour density
¦ noun Chemistry the density of a particular gas or vapour relative to that of hydrogen at the same pressure and temperature.
Vapour density
Vapour density is the density of a vapour in relation to that of hydrogen. It may be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen.
Density (computer storage)
MEASURE OF THE QUANTITY OF INFORMATION BITS THAT CAN BE STORED ON A GIVEN LENGTH OF TRACK, AREA OF SURFACE, OR IN A GIVEN VOLUME OF A COMPUTER STORAGE MEDIUM
Bit density; Data storage density; Data density; Storage density; Storage densities; Memory storage densities; Computer storage density; Constant bit-density; Memory density; Memory storage density; Areal Density (Computer Storage); Areal storage density; Areal density (computer storage)
Density is a measure of the quantity of information bits that can be stored on a given length (linear density) of track, area of surface (areal density), or in a given volume (volumetric density) of a computer storage medium. Generally, higher density is more desirable, for it allows more data to be stored in the same physical space.
Википедия
Vapour density
Vapour density is the density of a vapour in relation to that of hydrogen. It may be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen.
- vapour density = mass of n molecules of gas / mass of n molecules of hydrogen gas .
- vapour density = molar mass of gas / molar mass of H2
- vapour density = molar mass of gas / 2.016
- vapour density = 1⁄2 × molar mass
(and thus: molar mass = ~2 × vapour density) For example, vapour density of mixture of NO2 and N2O4 is 38.3. Vapour density is a dimensionless quantity.
