contestada

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?

Respuesta :

queenfay211

Answer:

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

57 ml x 1.26 g/ml = 71.8 g

maacastrobr

Answer:

71.8 g

Explanation:

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

[tex]Density=\frac{mass}{volume}[/tex]

[tex]Density=\frac{25.2g}{57mL}\\Density=1.26g/mL[/tex]

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

[tex]Volume*Density=Mass[/tex]

57 mL * 1.26 g/mL = 71.8 g

A 57 mL sample of glycerol weighs 71.8 g.