Question

A 20.0 mL sample of glycerol has a mass of 25.2 grams. What is the mass of a 57 mL sample of glycerol?

Answer 1

Density = 25.2 g/20.0 ml = 1.26 g/ml

57 ml x 1.26 g/ml = 71.8 g

Answer 2

71.8 g

Step-by-step explanation:

With the first sentence we can calculate the density of the sample of glycerol:

`Density=(mass)/(volume)`

`Density=(25.2g)/(57mL)\\Density=1.26g/mL`

Using the density of the sample we calculate the mass of a given volume:

`Volume*Density=Mass`

57 mL * 1.26 g/mL = 71.8 g

A 57 mL sample of glycerol weighs 71.8 g.