Materials:

1. A scale
2. A tube graduetid
3. Two tube
4. Mercury

Process

1. Measure the volume of the mercury and put it in a simple tube.
2. Put the simple tube on the scale. Now weigh the tube with mercury.
3. The result:         mass= 70,3g  volume=5,2cm3
4. Calculate the density: 13,5g/cm3

 THE DENSITY IS 13,5G/CM3