Density

Page
2

Mass of Liquid = Mass of Measuring Cylinder and Liquid – Mass of

empty Measuring Cylinder

25.0 g

20.0 cm3

45.0 g

45 – 25 = 20 g

 = m = 20 =1.00 g/cm3

V 20

Slide 11

Slide 12

Density of a gas

Remove the air from a flask of a known Volume, using a vacuum pump.

Find its Mass.

Add the gas to be tested.

Reweigh.

The difference is the Mass of gas.

Calculate Density.

To vacuum flask

1000 cm3

150.0 g

170.0 g

 = m = 20 =0.0200 g/cm3

V 1000

170 -150 = 20.0g