Density Review Name__________________________ Hr____
Show your work. Report your answer to the correct number of sig figs and include units.

If you take 4.37 grams of calcium chloride and find it occupies a volume of 2.2mL, what is the density of the substance?

Copper has a density of 8.96g/mL. When you drop a copper piece in a graduated cylinder already filled with 50.0mL of water, the volume of the water reads 59.2mL. What is the mass of this sample?

Osmium is one of the densest elements (22.7 g/mL). What would be the volume occupied by a 1.00 g sample of osmium?
4. An aluminum cube measures 2.68 cm x 3.90 cm x 1.10 cm. What is the mass of this cube knowing Al has a density of 2.70g/mL?
5. All of the following materials were combined into a single container. From the information given, rank the materials in order from the one that would float on top(#1) to the one that would sink to the bottom(#8).
MATERIAL DENSITY(g/mL) RANK MATERIAL DENSITY(g/mL) RANK
Bromine 3.1 _______ mercury 13.6 _______
Diamond 3.9 _______ carbon tetrachloride 1.6 _______
water 1.0 _______ aluminum 2.7 _______
ethanol 0.9 _______ table salt 2.2 _______
6. Why can a ship made of iron(density=7.87g/mL) float on water (density=1.0g/mL)?
7. An iron cube measures 3.12 cm x 567mm x 22.0 dm. What is the mass of this cube knowing Fe has a density of 7.21g/mL?
8. Determine the density of the Coke and the Diet Coke using the information below. Use this information to explain the observations from lab.
Volume of both cans.....................355 mL
Mass of Coke.................................391.78 g
Mass of Diet Coke.........................346.02 g
1. If you take 4.37 grams of calcium chloride and find it occupies a volume of 2.2mL, what is the density of the substance?
4.37 g = 1.9863 = 2.0 g/mL
2.2 mL
2. Copper has a density of 8.96 g/mL. When you drop a copper piece in a graduated cylinder already filled with 50.0 mL of water, the volume of the water reads 59.2 mL. What is the mass of this sample?
V = 59.2 – 50.0 = 9.2 mL
M = D x V = 8.96 g/mL x 9.2 mL
M = 82.432 g = 82 g
3. Osmium is one of the densest elements (22.7 g/mL). What would be the volume occupied by a 1.00 g sample of osmium?
V = m = 1.00g = 0.0441 mL
D 22.7 g/mL
4. An aluminum cube measures 2.68 cm x 3.90 cm x 1.10 cm. What is the mass of this cube knowing Al has a density of 2.70g/mL?
V = 2.68 x 3.90 x 1.10 = 11.5 cm^{3}
M = D x V = 2.70 g/mL x 11.5 mL = 31.1 g
5. D_{coke} = 391 g = 1.10 g/mL
355 mL
D_{diet coke} = 366 g = 1.03 g/mL
355 mL
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