$\Delta T$ $= 80.175 - 80 = 0.175$, $w = 1\,g$,  $W = 83.4\,g$

${K_{b\,}} = \,\,\frac{{R{T^2}}}{{1000{L_v}}}$

અથવા ${K_b}\,\, = \,\,\frac{{2\,\, \times \,\,353\,\, \times \,353}}{{1000\,\, \times \,\,90}}\,\,$

$ = \,\,2.769\,\,K\,\,mo{l^{ - 1}}\,\,kg$

હવે $,\,\,\Delta T\,\, = \,\,\frac{{{K_b}\,\, \times \,\,1000\,\, \times \,\,w}}{{m\,\, \times \,\,83.4}}$  

$\therefore \,\,m\,\, = \,\,189.79$