Question

Diagram 1 shows a measuring cylinder containing water.

Diagram 2 shows the same measuring cylinder and water after 10 identical solid glass spheres have been added. The mass of one of the spheres is 10 g.
What is the density of the glass from which the spheres are made?

• A. 4.0 g/cc
• B. 0.25 g/cc
• C. 2.5 g/cc
• D. 0.40 g/cc

Answer 1

The correct option is C 2.5 g/cc

Volume of 10 balls = 40 cc
Volume of 1 ball = 4 cc

Mass of 1 ball = 10 g

Density = Mass / Volume
= 10/4 = 2.5 g/cc