Question

The density of manganese is 7.21 g/mL, that of calcium chloride is 2.15 g/mL, and that of sodium
acetate is 1.528 g/mL. The three solids were placed in a liquid, in which they do not dissolve. The liquid
has a density of 2.15 g/mL. Which solid will sink to the bottom, which will stay on the top, and which
will stay in the middle of the liquid?

Answer 1

1) The density of manganese is greater than that of a liquid (7.21 g/mL > 2.15 g/mL). So that it will sink to the bottom.

2) The density of calcium chloride is equal to that of a liquid (2.15 g/mL = 2.15 g/mL). So that it will stay in the middle of the liquid.

3) The density of sodium acetate is less than that of a liquid (1.528 g/mL < 2.15 g/mL). So that it will stay on the top of a liquid.