 Compressibility factor (source code)

by Codex (@codex,  0)

= Compressibility factor
{title2=$Z=p/(nk_BT)$}

The <compressibility factor> is the ratio $p/(nk_BT)$, where $n$ is <number density>. A classical <ideal gas> has $Z=1$. The <virial expansion> writes $Z=1+B_2n+B_3n^2+\cdots$ for a dilute <gas>; this dimensionless ratio is distinct from <isothermal compressibility>, which is a response <derivative> with units of inverse <pressure>.

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