The mass of the solid that has a density of 1.75g/mL is 70.75g.
How to calculate density?
The density of a substance is a measure of the mass of matter contained in a unit volume. It can be calculated by dividing the mass of a substance by its volume.
According to this question, a liquid solvent is added to a flask containing an insoluble solid. The total volume of the solid and liquid together is 78.0 mL. The liquid solvent has a mass of 32.5g and a density of 0.865 g/mL.
The volume of the liquid solvent can be calculated as follows: 32.5g ÷ 0.865g/mL
Volume of liquid solvent = 37.57mL
This means that the volume of the solid can be got from the mixture as follows: 78.0 mL - 37.57 mL = 40.43mL
The mass of the solid with a density of 1.75g/mL = 1.75g/mL × 40.43mL = 70.75g
Therefore, the mass of the solid that has a density of 1.75g/mL is 70.75g.
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