If the density of a solution is 3.12 g mL–1, the mass of 1.5 mL solution in significant figures is _______.

Question

Philoid · Accepted Answer

Density is given by the formula

Density = mass/volume

By substituting the values, we get

3.12 = mass/1.5

Mass = 4.68g. Since the solution is asked in significant figures, the solution should be rounded up to two significant figures, i.e. 4.7g. The correct answer is (i).