The total volume of the solid and liquid together is 89.0 mL. The liquid solvent has a mass of 27.9 g and a density of 0.865 g/mL. Determine the mass of the solid given its density is 1.75 g/mL.

Answer 1

Ashley

I model this for you using 89.3, 27.7, 0.867, 1.77 then you can use my model.

Solid + liquid has volume 89.3 ml

Liquid solvent has mass 27.7 g , density 0.867 g / ml.

So volume of liquid solvent = mass / density = (27.2 / 0.867) ml

So volume of solid = 89.3 - (27.2 / 0.867)

Density of solid is 1.77

So mass of solid = volume x density = 1.77 x ( 89.3 - (27.2 / 0.867 )) = 102.5315882 g/ml

Accuracy : all our data has 3 significant figures, so we should quote result to 3 significant figures ie 103 g/ml

Mike