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

Answer:

  (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)