Formula from Chapter 9: average molar kinetic energy of particle at given temperature

\(E_{\mathrm{kin\ avg}} = \dfrac{3}{2} \cdot R \cdot T\)     

\(R\) \(= 8.314\ \frac{\mathrm{J}}{\mathrm{mol}\ \mathrm{K}}\)


\(T\) \(= 298.15\ \mathrm{K}\)


\(E_{\mathrm{kin\ avg}}\) \(= \dfrac{3}{2} \cdot R \cdot T\)

\(\ \ \ =\dfrac{3}{2} \cdot 8.314\ \frac{\mathrm{J}}{\mathrm{mol}\ \mathrm{K}} \cdot 298.15\ \mathrm{K}\)

\(\ \ \ =\frac{3 }{ 2} \cdot 8.314\ \frac{\mathrm{J}}{\mathrm{mol}\ \mathrm{K}} \cdot 298.15\ \mathrm{K}\)

\(\ \ \ =12.4710\ \frac{\mathrm{J}}{\mathrm{mol}\ \mathrm{K}} \cdot 298.15\ \mathrm{K}\)

\(\ \ \ =3718.2\ \frac{\mathrm{J}}{\mathrm{mol}}\)