If the density of a solution is 3.12 g mL-1, the mass of 1.5 mL solution in significant figures is _______.
(i) 4.7g
(ii) 4680 × 10-3 g
(iii) 4.680g
(iv) 46.80g
The answer is the option (i) 4.7g
Explanation:
Given, the density of a solution = 3.12 g mL-1
Volume = 1.5 mL
Mass = Volume × Density
= 1.5mL × 3.12g m/L
= 4.68 g which when rounded to 2 significant figures is 4.7 g.