Dimensional analysis - 2 | Chemistry and the Scientific Method
Mercury is a metal with a very low melting point (-38.8°C) and therefore thermometers were made with mercury. The volume of mercury changes slightly with temperature; the small change in volume indicates the temperature. But it is important to know the density of mercury.
At 25°C, 1.667 mL of mercury has a mass of 22.55 grams. What is the density of mercury in g.mL-1 and kg.m-3?
density (in g.mL-1) = = = 13.53 g.mL-1
13.53 g.mL-1 = x x x x = 13.53 x 103 kg.m-3
density (in kg.m-3) = 13.53 x 103 kg.m-3