Problems:
1. If 89.2 mL of a liquid has a mass of 75.2 g, calculate the density in g/cm 3.
2. A cube of metal has a mass of 1.45 kg and displaces 542 mL of water when immersed. What
is the metals density?
3. The density of pure silver is 10.5 g/cm3. What volume will 5.25 g of silver pellets occupy?
4. Find the volume of an object that has a density of 3.14 g/mL and a mass of 93.5 g.
5. If the density of mercury is 13.6 g/cm3, what is the mass of 50.0 mL of mercury?
6. If a 100.0 g sample of platinum has a volume of 4.67 mL, what is the density of the metal?
7. Ethyl alcohol has a density of 0.790 g/cm3. What is the mass of 75.0 mL?
8. What is the mass of copper that has a volume of 10.0 mL if copper’s density is 8.92 g/cm 3?
9. A graduated cylinder contains 20.0 mL of water. An irregularly shaped object is placed in
the cylinder and the water level rises to 31.2 mL. If the object has a mass of 47.9 g, what
is its density?
10. A sample of an unknown metal (density = 4.92 g/cm3) has a mass of 922.0 g. What is the
volume of this piece of metal?
11. A solid object with a volume of 5.62 mL has a mass of 108 g. Would this object float or sink
in mercury? (density of mercury = 13.6 g/cm3)
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12. A chemist needs 25.0 g of bromine for an experiment. What volume should she use?
(density of bromine = 3.12 g/cm3)
Data Table: Density values of common substances at 20oC in g/cm3
Substance
Density
Substance
Density
Ethanol
0.790
Aluminum
2.70
Water
1.000
Iron
7.87
Lead
11.35
Gold
19.32
Chloroform
1.49
Copper
8.96
Mercury
13.55
Silver
10.50
13. A piece of lead has a mass of 22.7 g. It occupies a volume of 2.00 mL. Calculate the density
of the lead. Does this value agree with the data table above?
14. A sample of lead and a sample of aluminum have equal volumes. How would the mass of the
lead sample compare with the mass of the aluminum sample?
15. A sample of metal occupies a volume of 0.500 L and has a mass of 1350.9 g. Calculate the
density of the metal. What type of metal is the sample?
16. An iron block is measured and its dimensions are 34.6 cm long, 28.9 cm wide, and 12.0 cm
thick. Calculate the mass of the block.
17. The density of carbon tetrachloride (CCl4) is 1.49 g/mL. What will 100.0 mL of this
substance weigh in ounces?
18. On your lab table are three graduated cylinders containing unknown liquids. The volume of
each liquid is 150.0 mL. If the mass of the liquids are:
a. Liquid A = 2032.5 g
b. Liquid B = 118.5 g
c. Liquid C = 223.5 g
What are the identities of the three liquids?
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