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$$
{\frac  {P_{{\mathrm  {gas}}}}{A_{{\mathrm  {F}}}}}={\frac  {B_{{\mathrm  {F}}}}{A_{{\mathrm  {F}}}}}{\frac  {\Re }{{\bar  {\mu }}}}\chi ^{3}T={\frac  {\mu _{e}}{{\bar  {\mu }}}}{\biggl [}\chi ^{3}T{\biggr ]}{\frac  {8\pi m_{p}}{3}}{\biggl (}{\frac  {m_{e}c}{h}}{\biggr )}^{3}{\frac  {3h^{3}}{\pi m_{e}^{4}c^{5}}}{\biggl (}kN_{{\mathrm  {A}}}{\biggr )}={\biggl (}m_{p}N_{{\mathrm  {A}}}{\biggr )}{\frac  {\mu _{e}}{{\bar  {\mu }}}}{\biggl [}8\chi ^{3}T{\biggr ]}{\frac  {k}{m_{e}c^{2}}}.
$$
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