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Classify the following as a pure substance or a mixture: Bread.

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An organic liquid has a density of 0.8 g/cm3. What is the mass of a 42.0 mL sample of this liquid?

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An object will float at the surface of a liquid if the mass of the object is less than the mass of the liquid that it displaces. A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene? (Given: density of water = 1.00 g/cm3; density of benzene = 0.879 g/cm3)


A) 45.5 mL
B) 448 mL
C) 53.4 mL
D) 57.5 mL
E) 65.4 mL

F) A) and B)
G) B) and E)

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A soft drink costs 75 cents for a 12-oz can. A two-liter bottle costs $1.25. In which form is the soft drink more expensive? How much more expensive? (1.0 L = 1.057 qt, 1 qt = 32 oz)

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The two-liter bottle...

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What is the density of copper if 11.8 cm3 of copper has a mass of 105.2 g?

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The Hope diamond weighs 44.0 carats. Determine the volume occupied by the diamond, given that its density is 3.5 g/cm3 at 20 \circ C, and that 1 carat = 0.200 g.


A) 2.5 cm3
B) 0.40 cm3
C) 0.016 cm3
D) 63 cm3
E) 150 cm3

F) A) and B)
G) A) and E)

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All of the following are properties of sodium. Which one is a physical property of sodium?


A) It is a surface turns black when first exposed to air.
B) It is a solid at 25 \circ C and changes to a liquid when heated to 98 \circ C.
C) When placed in water it sizzles and a gas is formed.
D) When placed in contact with chlorine it forms a compound that melts at 801 \circ C.
E) Sodium is never found as the pure metal in nature.

F) A) and B)
G) All of the above

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A barrel of oil contains 42.0 gallons. How many liters is this? (1L = 1.06 qt)


A) 9.9 L
B) 11 L
C) 142 L
D) 158 L
E) 178 L

F) All of the above
G) C) and D)

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Choose the response that includes all the items listed below that are pure substances. i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup


A) i, iii, v
B) ii, iv
C) i, iii, iv
D) iv only
E) all of them are pure

F) B) and D)
G) A) and C)

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Express the fraction 1/23 as a decimal to 4 significant figures.


A) 0.0434
B) 0.0435
C) 0.04347
D) 0.04348
E) 0.04350

F) B) and C)
G) B) and E)

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A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as


A) a hypothesis.
B) a law.
C) a theory.
D) none of the above.

E) C) and D)
F) B) and D)

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Define pure substance.

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Something ...

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What is the volume, in cubic inches, of a brick that is 4.0 in * 2.7 in * 8.0 in?


A) 15 in3
B) 51 in3
C) 78 in3
D) 87 in3
E) 150 in3

F) A) and B)
G) A) and C)

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What are the common names for the three states of the compound water?

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Ice, water...

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What is the volume, in cubic centimeters, of a brick that is 4.0 in * 2.7 in * 8.0 in?


A) 5.3 cm3
B) 53 cm3
C) 87 cm3
D) 4.8 * 102 cm3
E) 1.4 * 103 cm3

F) C) and E)
G) B) and D)

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Mass, length, and volume are extensive properties, but density is an intensive property.

A) True
B) False

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The SI base unit of length is the centimeter.

A) True
B) False

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Liquid nitrogen boils at -195.8 \circ C. Express the boiling point of liquid nitrogen in \circ F.


A) -384.4 \circ F
B) -352.4 \circ F
C) -320.4 \circ F
D) -140.8 \circ F
E) -76.8 \circ F

F) B) and E)
G) A) and C)

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The diameter of Earth is 12.7 Mm. Express this diameter in centimeters.


A) 1.27 * 105 cm
B) 1.27 * 106 cm
C) 1.27 * 107 cm
D) 1.27 * 108 cm
E) 1.27 * 109 cm

F) A) and B)
G) A) and E)

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A microliter corresponds to:


A) 10- 2 liters.
B) 10- 3 liters.
C) 10- 6 liters.
D) 10- 9 liters.
E) 10- 12 liters.

F) C) and D)
G) All of the above

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