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An italic capital Z, one for an ideal gas and not otherwise.
Also known as: Compressibility factor, Compression factor, Z factor
The compressibility factor is pV over nRT, so it is exactly 1 when the ideal gas law holds and departs from 1 when it does not. Below 1 attraction dominates; above 1 the molecules' own volume does. It shares its letter with the partition function.
Denotes the compressibility factor, the ratio of a real gas's molar volume to the ideal value.
Contexts: Laboratory
Falls below one where intermolecular attraction dominates and rises above one where finite molecular volume does.
Contexts: Laboratory
Collides with the partition function, atomic number and impedance, all written with a capital Z.
Contexts: Laboratory
An italic capital letter Z, two horizontal strokes joined by a diagonal.