Solving for Density

A gold-colored ring has a mass of 18.9 grams and a volume of 1.12 mL. Is the ring pure gold? (The density of gold is 19.3 g/mL.)

• Yes

• No

Pumice is volcanic rock that contains many trapped air bubbles. A 225-gram sample occupied 236.6 mL. What is the density of pumice? (Round your answer to two decimal places)

Will pumice float on water if the density of water is 1.0 g/mL?

• Yes

• No

From their density values, which of the following substances will float when placed in sea water, which has a density of 1.025 g/mL.

• Gasoline 0.66 g/mL

• Mercury 13.6 g/mL

• Cork 0.26 g/mL

• Asphalt 1.2 g/mL

From their density values, which of the following substances will sink when placed in sea water, which has a density of 1.025 g/mL.

• Gasoline 0.66 g/mL

• Asphalt l.2 g/mL

• Cork 0.26 g/mL

• Mercury 13.6 g/mL

A 32 g sample of lead is found to have a volume of 8 mL. Calculate the density of the lead sample.

A piece of magnesium is in the shape of a cylinder has a volume of 14 cm. If the magnesium sample has a mass of 210 g, what is the density of the sample?

A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.

A rectangular block of copper metal weighs 2,880 g. The dimensions of the block are 8 cm by 5 cm by 6 cm. From this data, what is the density of copper?