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1. A freighter carrying a cargo of uranium hexafluoride sank in the English Channel in late August 1984. The cargo of uranium hexafluoride weighed 2.25 ´ 108 kg and was contained in 30 drums, each having a volume of 1.62 ´ 106 L. What is the density (g/mL) of uranium hexafluoride?

A) 1.39 g/mL

B) 4.63 g/mL

C) 1.39 g/mL

D) 46.3 g/mL

E) 41.7 g/mL

2. The state of matter for an object that has both definite volume and definite shape is

A) solid state.

B) liquid state.

C) gaseous state.

D) elemental state.

E) mixed state.

3. _________ are substances with constant composition that can be broken down into elements by chemical processes.

A) Solutions

B) Mixtures

C) Compounds

D) Quarks

E) Heterogeneous mixtures

4. A solution is also called a

A) homogeneous mixture.

B) heterogeneous mixture.

C) pure mixture.

D) compound.

E) distilled mixture.

5. An example of a pure substance is

A) elements.

B) compounds.

C) pure water.

D) carbon dioxide.

E) all of these

6. Which of the following is not a unit in the SI system?

A) ampere

B) candela

C) Kelvin

D) meter

E) calorie

7. A 20.0-mL sample of glycerol has a mass of 25.2 grams. What is the mass of a 53-mL sample of glycerol?

8. Suppose that you purchased a water bed that has dimensions 2.55 m ´ 2.53 dm ´ 230 cm. What mass of water does this bed contain?

9. As warm water sits in a cool room, you measure the temperature change. Which of the following is true?

A) The temperature change is bigger if you are measuring in °F.

B) The temperature change is bigger if you are measuring in °C.

C) The temperature change will be the same regardless of the scale you use.

D) Answer a or b is correct, depending on the difference in temperature between the water and the room.

E) none of these

10. Explain how Archimedes might have used the concept of density to determine whether the king's crown was pure gold. (density of gold = 19.32 g/cm3)