Density Problems
Solve the following problems, showing all steps and work.
1. A sample of copper has a mass of 89.6g and a volume of 10.00cm3.
Calculate the density of copper. (8.96 g/cm3)
2. What is the density of carbon dioxide gas, if 0.196 g occupies a volume of
100mL? (0.00196g/mL or 1.96 x 10-3 g/mL)
3. A cube-shaped block of wood is measured at 3.0cm on each side, and has a
mass of 27g. What is the density of this wood? (1.0 g/cm3)
4. An irregularly-shaped rock has a mass of 2500g and is placed into an
overflow can filled with water. If the density of the rock is 1.656 g/mL,
calculate the volume of the rock. (1510 mL or 1.5 x 103 mL)
5. An irregularly-shaped small rubber stopper was lowered into a graduated
cylinder containing 2.0mL of water. The water level rose to 7.0 mL. If the
mass of the rubber stopper is 25g, what is its density? (5.0 g/mL)
6. Silver has a density of 10.5 g/cm3, while gold has a density of 19.3 g/cm3.
Which would have a greater mass, 5.0 cm3 of silver or 5.0 cm3 of gold?
Why?
7. 5.0 mL of liquid ethyl alcohol has a mass of 3.9g, while 5.0 mL of benzene
gas has a mass of 4.4g. Which of these two substances is more dense?
8. A sample of iron with dimensions 2.0cm x 3.0cm x 2.0 cm has a mass of
94g. Calculate the density of iron. (7.8 g/cm3)
9. A warehouse has 5.00 m3 of styrofoam. If the density of styrofoam is 10.1
kg/m3, what is the mass of the styrofoam in the warehouse? (50.5 kg)
10.A 500g piece of sandlewood has a density of 0.39g/cm3. Calculate the
volume of the sandlewood.
(1282 cm3 or 1.3 x 103 cm3 or 1282 mL or 1.3 x 103 mL)