Chemistry Manual 2012-2013 - Edison State College

Blake Schmidt - Unit 2 Page 17
U2 EP3
Unit 2: Example Problems 3
Mass, Volume, and Density
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Ethanol has a density of 0.789 g/cm 3 .
a. What is the mass of 225 cm 3 of ethanol?
b. What is the volume of 75.0 g of ethanol?
The cup is a volume widely used by cooks in America. One cup is equivalent to 225 cm 3 . If 1.00 cup
of olive oil has a mass of 205 g, what is the density of olive oil in g/cm 3 ?
What would you expect to happen if the cup of olive oil is poured into a container of ethanol?
Gold has a density of 19.3 g/ cm 3 . A cube of gold measures 4.23 cm on each edge.
a. What is the volume of the cube?
b. What is its mass?
Your standard backpack is 30. cm x 30. cm x 40. cm. Suppose you find a hoard of pure gold while
treasure hunting in the wilderness. How much mass would your standard backpack hold if you filled
it with the gold? An average student has a mass of 70. kg. How do these values compare?
A kilogram is about 2.2 pounds. A 70. kg person is how many pounds? How many pounds of gold are
in the backpack?
An object measures 3.0 cm tall, 4.0 cm wide, and 5.0 cm long. How many mL?
Use the density table from U2 EP2 to help you answer the following questions.
What is the mass of 10. mL of aluminum?
What is the volume of 15 g piece of lead?
A piece of metal is 14 g and has a volume of 5.19 mL. What kind of metal is it?
You are given 10. mL of aluminum and 10. mL of lead.
a. Which piece is larger?
b. Which has more mass?
c. Which is denser?
d. How many grams of lead?
You are given 50. g of zinc and 50. g of tin.
a. Which piece is larger?
b. Which has more mass?
c. Which is denser?
d. How many mL of zinc?
e. How many mL of tin?
You are given 100. g of zinc and 75 g of nickel.
a. Which piece is more massive?
b. How many mL of zinc?
c. How many mL of nickel?
d. Which piece is larger?