## 2.3. Noncubic EOS

$\begin{array}{c}Z=1+\frac{B}{V}+\frac{C}{{V}^{2}}+\frac{D}{{V}^{3}}+\dots \\ \left(Z=1+B{\rho}_{\text{M}}+C{\rho}_{\text{M}}^{2}+D{\rho}_{\text{M}}^{3}+\dots \right)\end{array}$

(2.41)

$Z=1+{B}^{\prime}P+{C}^{\prime}{P}^{2}+{D}^{\prime}{P}^{3}+\dots $

(2.42)

_{M}is the molar density, P is the pressure and B, C, D,… are the second, ...

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