74) A 14-karat gold ring contains 58.3% gold and weighs 12.41 g. If gold sells for $308.00/ounce, what is
the value of the gold in the ring?
A) $116
B) $135
C) $231
D) $58.90
E) $78.60
75) A briefcase 4.5 in × 22 in × 11 in is filled with gold, which has a density of 19.3 g/cm3 and costs
$308/oz. What is the dollar value of this gold?
A) $5.80 × 105
B) $1.56 × 103
C) $3.74 × 106
D) $1.00 × 104
E) $2.81 × 106
76) A briefcase 4.5 in × 22 in × 11 in is filled with gold, which has a density of 19.3 g/cm3 and costs
$308/oz. What is the mass of this gold in kg?
A) 460 kg
B) 53.5 kg
C) 136 kg
D) 344 kg
E) 17.9 kg
77) What mass, in g, of a solution containing 12% by mass sodium chloride is needed for a process that
requires 8 g of sodium chloride?
A) 12 g
B) 150 g
C) 67 g
D) 0.96 g
E) 8 g
78) A jewelry alloy has a density of 12.412 g/mL and is 75.0% gold by weight. If 522 g of gold are
available, what volume of this alloy can be produced?
A) 8.64 × 103 mL
B) 31.5 mL
C) 4.86 × 103 mL
D) 335 mL
E) 56.1 mL
79) What mass of sugar, in grams, would be obtained from the evaporation of water from 1.5 kg of a
sugar solution which is 10.5% sugar by mass?
A) 0.1575 g
B) 0.158 g
C) 157.5 g
D) 15.8 g
E) 160 g
80) A solution of 34.5% sulfuric acid by weight in water has a density of 1.26 g/mL. How many grams of
sulfuric acid are needed to make 3.22 L of this solution?
A) 1.20 × 105 g
B) 882 g
C) 135 g
D) 1.40 × 103 g
E) 1.40 × 105 g
81) A block of wood has dimensions of and has a mass of 3.0 kg. What is the
density of the wood?
A) 1400 g/mL
B) 0.071 g/mL
C) 0.71 g/mL
D) 1.4 g/mL
E) 140 g/mL
82) A 2.0 gal flask weighs 4.0 lbs when empty. When it is filled with liquid, the flask weighs 4536.0 g.
What is the density of the liquid in g/mL? (1 gal = 3.785 L, 1 lb = 453.6 g)
A) 0.36 g/mL
B) 0.72 g/mL
C) 0.60 g/mL
D) 0.14 g/mL
E) 0.071 g/mL
83) Calculate the density in g/cm3 of a 15 lb block of aluminum with a displacement volume of 0.6657
U.S. gal.
A) 22.5 g/cm3
B) 11.47 g/cm3
C) 0.371 g/cm3
D) 2.25 g/cm3
E) 2.70 g/cm3
84) Two hundred thirty-seven pounds of ethanol with a density of 0.789 g/cm3 occupies what volume in
U.S. quarts?
A) 144 qt
B) 108 qt
C) 136 qt
D) 84.9 qt
E) 129 qt
85) A 16.0 g sample of iron has a volume of 2.035 cm3. What is its density expressed to the correct number
of significant figures?
A) 0.127 g/cm3
B) 32.6 g/cm3
C) 7.86 g/cm3
D) 7.862 g/cm3
E) 7.9 g/cm3
86) Perform the following calculation and express the result with the appropriate number of significant
figures:
A) 4.80 × 102
B) 477
C) 4.8 × 102
D) 477.3
E) 477.25
87) What is the correct number of significant figures in the answer to the following multiplication: 1.022 ×
0.0011.
A) one
B) three
C) four
D) two
E) cannot be determined
88) Using the proper number of significant figures, how should the answer to the multiplication of the
measurements be written?
A) 83.8148
B) 83.8
C) 83.81
D) 83.815
E) 83.82
89) Calculate the length of a steel cable (density 7.91 g/cm3) with a mass of 160.0 g and cross-sectional
area of 0.500 cm2.
A) 40.5 cm
B) 20.23 cm
C) 40.46 cm
D) 20.2 cm
E) 10.1 cm
90) What is the answer, to the correct number of significant figures, of the following calculation?
A) 16.7068
B) 16.707
C) 16.71
D) 16.7
E) 16
91) A 15.0 g sample of hydrated copper sulfate was heated to dryness and the new mass measured to be
9.59 g. Calculate the percentage of water in the hydrated crystal. Express your answer to the correct
number of significant digits.
A) 36.1%
B) 36%
C) 63.3%
D) 63%
E) 45%
92) What is the answer to the correct number of significant figures of the following calculation?
A) 2.3
B) 2.3001
C) 2.300
D) 2.30004
E) 2.30011
93) What is the answer to the correct number of significant figures of the following calculation?
A) 7.6
B) 7.57
C) 7.58
D) 7.578
E) 7.582
94) What is the answer to the correct number of significant figures of the following calculation?
A) 2.84
B) 30
C) 25.01
D) 25.0
E) 25
95) Which of the following is the smallest volume?
A) 11 cm3
B) 0.25 dL
C) 1.4 × 103 mL
D) 2.5 × 107 nL
96) What is the volume (in cm3) of a 43.6 g piece of metal with a density of 2.71 g cm-3?
A) 16.1 cm3
B) 19.5 cm3
C) .425 cm3
D) 6.65 cm3
E) none of the above
97) A piece of metal ore weighs 8.25 g. When a student places it into a graduated cylinder containing
water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?
A) 0.312 g mL-1
B) 0.633 g mL-1
C) 1.58 g mL-1
D) 3.21 g mL-1
98) A mass of mercury occupies 0.750 L. What volume would an equal mass of ethanol occupy? The
density of mercury is and the density of ethanol is 0.789 g mL-1.
A) 0.0437 L
B) 0.0777 L
C) 12.9 L
D) 22.9 L
99) If the melting point of vanadium metal is 1910 °C, what is its melting point in kelvin?
A) 1029 K
B) 1637 K
C) 2183 K
D) 3470 K
100) Which of the following is the lowest temperature?
A) 42 °C
B) 57 °F
C) 318 K
D) All of these temperatures are equal.
101) How many significant figures are in the measurement 5 g?
A) 1
B) 3
C) 5
D) 4
E) 2
102) What is the correct answer, with the proper number of significant figures, for the following
calculation?
6.3 × 3.78
103) Round the following number to four significant figures and express the result in standard
exponential notation:
29,724.33
A) 29,720
B) 29.72 × 103
C) 0.2972 × 105
D) 2.972 × 104
E) 2.972 × 10-4
104) Which of the following numbers has the greatest number of significant figures?
A) 0.5070
B) 0.201
C) 418000
D) 6.02 × 1024
105) How many of the following numbers contain three significant figures?
0.408 9.040 0.0400 9.05 × 1024
A) one
B) two
C) three
D) four
106) How many significant figures are there in the answer to the following problem?
(9.992 × 3.200) + 0.610
A) one
B) two
C) three
D) four
107) How many significant figures are there in the answer to the following problem?
57.5 + 0.9933 + 31
A) one
B) two
C) three
D) four
108) How many significant figures are there in the answer to the following problem?
A) one
B) two
C) three
D) four
109) An acetylene molecule contains 2 atoms of carbon. The number 2 represents how many significant
figures?
A) one
B) two
C) three
D) infinite
110) Round off 00907506 to four significant figures.
A) 0091
B) 9076
C) 9100
D) 9.075 × 105
111) The width, length, and height of a large, custom-made shipping crate are 1.22 m, and
respectively. The volume of the box using the correct number of significant figures is ________ .
A) 3.26057
B) 3.3
C) 3.26
D) 3.261
E) 3.2606
112) What is the correct answer, with the proper number of significant figures, for the following
calculation?
(1815 – 1806) × (9.11 × 7.92)
113) Without using a calculator, solve the following problem:
A) 1 × 10-4
B) 1 × 105
C) 1 × 1023
D) 1 × 1032
114) Without using a calculator, solve the following problem:
A) 1 × 106
B) 1 × 100
C) 1 × 10–12
D) 1 × 10–18
115) Which of the following is the greatest mass?
A) 1000 μg
B) 1.000 × 10-4 kg
C) 1.000 × 10-4 cg
D) 1.000 × 10-8 mg
116) The mass of a proton is 1.67 × 10–27 kg. What is the mass of a proton in picograms?
A) 1.67 × 10–18 pg
B) 1.67 × 10–15 pg
C) 1.67 × 10–12 pg
D) 1.67 × 10–9 pg
117) The mass of a single zinc atom is 1.086 × 10–22 g. This is the same mass as:
A) 1.086 × 10–16 mg
B) 1.086 × 10–25 kg
C) 1.086 × 10–28 μg
D) 1.086 × 10–31 ng
118) A student weighed 30.00 μg of sulfur in the lab. This is the same mass as:
A) 3.000 × 10–8 g
B) 3.000 × 10–5 kg
C) 3.000 × 10-5 mg
D) 3.000 × 104 ng
119) Convert 4 μm to metres.
A) 4 × 10-9 m
B) 4 × 10-6 m
C) 4 × 10-3 m
D) 4 × 106 m
120) The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric
oxide. What is this distance in millimeters?
A) 1.15 × 10–8 mm
B) 1.15 × 10–7 mm
C) 1.15 × 1013 mm
D) 1.15 × 1017 mm
121) The diameter of an atom is approximately 1 × 10–10 m. What is the diameter in millimeters?
A) 1 × 10–16 mm
B) 1 × 10–13 mm
C) 1 × 10–7 mm
D) 1 × 10-4 mm
122) Which of the following volumes is equal to 40 mL?
A) 40 cm3
B) 40 dm3
C) 0.40 L
D) 0.00040 kL
123) Convert 10 cm3 to m3.
A) 1 × 10–5 m3
B) 1 × 10-1 m3
C) 1 × 103 m3
D) 1 × 107 m3
124) Convert 35 m3 to litres.
A) 3.5 × 10-2 L
B) 3.5 L
C) 3.5 × 102 L
D) 3.5 × 104 L
125) 38.325 lbs = ________ grams. (1 lb = 454 g)
126) If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 185-
pound man?
A) 1.2 kg Ca
B) 5.7 kg Ca
C) 1.2 × 102 kg Ca
D) 5.7 × 102 kg
127) A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42
gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square metres will the oil slick cover?
A) 1.9 × 10-3 m2
B) 1.9 × 106 m2
C) 1.9 × 107 m2
D) none of the above
128) Because of the high heat and low humidity in the summer in Death Valley, California, a visitor
requires about one quart of water for every two miles travelled on foot. Calculate the approximate
number of litres required for a person to walk 10 kilometres in Death Valley.
A) 7.4 L
B) 295 L
C) 76 L
D) 117 L
129) The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at
each, two paint brushes at each, and for a helper. The total estimated cost with the
appropriate significant figures is
A) 193.72
B) 1.9 ×
C) 194
D) 2 ×
E) 193.7
130) How many litres of wine can be held in a wine barrel whose capacity is 25.0 gal?
A) 1.51 × L
B) 0.151 L
C) 94.6 L
D) 6.60 × L
E) 6.60 L
131) The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg kg-1 of body
mass. Calculate the dose in milligrams for a 112-lb person. (1 lb = 453.59 g)
A) 24 mg
B) 1,482 mg
C) 1.5 mg
D) 305 mg
E) 3.0 × mg
132) The density of air under ordinary conditions at 25 °C is 1.19 g L-1. How many kilograms of air are in
a room that measures and has a 8.00 ft ceiling? (exactly); )
A) 2.93
B) 0.121
C) 3.26 ×
D) 0.0770
E) 32.6
133) How many litres of air are in a room that measures and has an 8.00 ft ceiling?
A) 3.26 ×
B) 121
C) 35.1
D) 3.51 ×
E) 9.75 × 105
134) Crude oil is an example of:
A) a compound
B) an element
C) a heterogeneous mixture
D) a homogeneous mixture
135) Gasoline is an example of:
A) a compound
B) an element
C) a heterogeneous mixture
D) a homogeneous mixture
136) Gold is an example of:
A) a compound
B) an element
C) a heterogeneous mixture
D) a homogeneous mixture