• # question_answer 55)   If the density of a solution is $3.12m{{L}^{-1}}$, the mass of 1.5 mL solution in significant figures is: (a) 4.7 g                                (b) $4680\times {{10}^{-3}}g$ (c) 4.680 g                             (d) 46.80 g

(a) Mass = Volume x Density = $1.5\times 3.12=4.68g$ Result will be reported upto two significant figures. $\therefore$ Mass = 4.7 g (after rounding off)