\({C_v} = \,\,\,\frac{3}{2}\,\,R\,\, = \,\,\,\frac{3}{2}\,\, \times \,\,2\,\,\, = \,\,\,3\,\) કેલરી/મોલ \(K\)
\({C_v} = \,\,{M_w}\,{c_v}{\text{ }}\) અને \(\,\,{c_v} = \,\,0.075\) કેલરી/ગ્રામ \(K\)
આથી \(3\,\, = \,\,{M_w} \times \,\,\,0.075\,\,\,\,\,\, \Rightarrow \,\,{M_w} = \,\,\frac{3}{{0.075}}\,\, = \,\,\,40\,\,\) ગ્રામ \ મોલ