Download Density In Class Assignment

Chemistry ‘S’ – In Class Assignment
Density Problems
*Solve the following density problems using the Factor Label
method. Show the starting formula for density and any
rearrangements algebraically to solve for the unknown
variable. Round all final answers to the correct number of
significant figures and include the correct units. Assume all
density determinations are carried out at 20.0 oC.*
1. A sample of gold has a density of 19.3 g/cm3 and occupies a
volume of 3.00 cm3. What is the mass of this sample of gold?
2. The density of silver is 10.5 g/cm3. What volume will a piece
of silver occupy if the mass is 31.5 g?
3. A sample of iron is measured to the following dimensions,
2.00 cm by 120 cm by 26.5 cm. If the mass of the sample of
iron is 50,000. g, what is the density of iron?
4. The density of uranium is 18.9 g/cm3. What would be the
volume of a piece of uranium having a mass of 58.0 g?
5. The density of tin is 5.75 g/cm3. What would be the mass of
a piece of tin that occupied a volume of 442 cm3?
6. What is the density of aluminum if a 135 g piece occupies a
volume of 5.0 x 101 cm3?
7. You are given a clear blue liquid in a 100 mL graduated
cylinder. The mass of the empty graduated cylinder is found
to be 40.57 g. The mass of the graduated cylinder and the
liquid is recorded as 105.37 g. The volume of the liquid is
read and recorded as 54.0 cm3. What is the density of the
liquid?
8) Given that the density of water is 1.00 g/cm3, what will
happen when the liquid from question #7 is put into water?
9. A sample of ethylene glycol, an ingredient of antifreeze, has
a density of 1.11 g/cm3. What is the mass of 45.8 cm3 of this
sample?
10. Explain how a change in temperature affects density.
11. In addition to temperature, what else should be listed when
measuring the density of a gas?