Density Practice Problems

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d = V = 0.52 L = ______ mL M = 550 mg = ______ g

0.001

d = ? V = 750 mL M = 98 g

0.13

A block of wood 3 cm on each side has a mass of 27 g. What is the density of the block? (Hint, don't forget to find the volume of the wood.)

1

Density of water

1 g/mL (or 1 g/cm³)

d = 7 g/mL V = 200 mL M = ?

1400

A block of aluminum occupies a volume of 16.0 mL and has a mass of 42.5 g. What is its density?

2.7

What is the mass of ethanol that exactly fills a 300.0 mL container? The density of ethanol is 0.789 g/mL.

236.7

What volume of silver metal will weigh exactly 2700.0 g. The density of silver is 10.5 g/cm3.

257.14

The density of silver is 10.5 g/cm3 . What will be the volume of a piece of silver having a mass of 31.5 g?

3

d = 25 g/mL V = 1.3 L = _____ mL M = ?

32500

d = 0.62 g/cm3 V = ? M = 21 g

33.87

2.83

38.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 59.10 mL mark, From this information, calculate the density of iron.

The density of pine is generally about 0.5 g/cm3 . What is the mass of a 800 cm3 piece of pine?

400

The density of mercury metal is 13.6 g/mL. What is the mass of 45 mL of the metal ?

612

A piece of tin has a mass of 16.52 g and a volume of 2.26 cm3 . What is the density of tin?

7.31

A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?

8.96

A block of lead has dimensions of 5.50 cm by 8.20 cm by 6.00 cm. The block weighs 2587 g. From this information, calculate the density of lead.

9.56

11.33

d = ? V = 150 mL M = 1.7 kg = ______ g

3.26

A man has a 50.0 cm3 bottle completely filled with 163 g of a slimy green liquid. What is the density of the liquid?

9.39

A rectangular block of copper metal weighs 1996 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper? (hint: find the volume of a block first)

7.83

A sample of iron has the same dimensions of 2 cm x 3 cm x 2 cm. If the mass of this rectangular-shaped object is 94 g, what is the density of iron?

79

A sample of iron occupies a volume of 10.0 cm3 . If the density of iron is 7.9 g/cm3 , what is the mass of the sample?

55

A small beaker contains 55.0 mL of water. What would be the mass of the water?

Density

Amount of mass within a given volume.

Mass

Amount of matter in an object

Volume

Amount of space an object takes up

5

An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density?

9.55

Mercury metal is poured into a graduated cylinder that holds exactly 42.5 mL. The mercury used to fill the cylinder has a mass of 406.0 g. From this information, calculate the density of mercury.

Water Displacement

Process for finding the volume of an irregular solid

0.00196

What is the density of CO gas if 0.196 g occupies a volume of 100 ml?

36.1

What is the volume of 325 g of metal with a density of 9.0 g/cm3 ?

220.88

Find the mass of 252.0 mL of benzene. The density of benzene is 0.8765 g/mL.

D = M / V

Formula for density

L x W x H

Formula for finding volume of regular shape

Object floats in water

if density of object is less than dense than water

Graduated Cylinder

instrument used to measure volume of a liquid

Density describes the relationship between the ____________ and ____________ of a sample of a substance.

mass, volume

If you cut an object in half its density

stays the same

centimeters (cm)

unit for measuring length (1/100th of a meter)

grams (g)

unit for measuring mass

milliliters (mL)

unit for measuring volume of a liquid

cubic centimeters (cm3)

unit for measuring volume of a solid


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