Question

A piece of metal with a mass of 140 grams is placed into a graduated cylinder containing 50.0. When the metal was put in the cylinder, the water level rose to 70.0. What is the density of the metal?

Answer 1

Typically cylinder was graduated in mL

The volume of the metal is indicated by how much the water level rises in the cylinder.

Volume of metal = New level - Initial level = 70 - 50 =20 mL

Density = Mass / Volume

              =  140 g / 20 mL

              =  7 g/mL

Density of the metal = 7 g/mL

Note that 1 mL = 1 cm³.  Therefore 7g/mL = 7 g/cm³.

Density = 7g/mL or 7 g/cm³.

I hope this helps.

Answer 2

The density would be 7g/ml.