31) If an object, beginning at rest, is moving at a speed of 700 m/s after 2.75 min, its rate of acceleration
(in m/s2) is ________. (Assume that the rate of acceleration is constant.)
A) 1.16 × 105
B) 255
C) 193
D) 4.24
E) 1.53 × 104
32) The correct answer (reported to the proper number of significant figures) to the following is ________.
6.3 × 3.25 = ________
A) 20.
B) 20.475
C) 20.48
D) 20.5
E) 21
33) The correct answer (reported to the proper number of significant figures) to the following is ________.
(2.05631)(6.9391136) / 12.59326 = ________
A) 1.1330639
B) 1.13306
C) 1.133064
D) 1.1361
E) none of the above
34) The correct answer (reported to the proper number of significant figures) to the following is ________.
12.75 × 1.3621 = ________
A) 17.367
B) 17.40
C) 17.37
D) 17.4
E) 17.0
35) The correct answer (reported to the proper number of significant figures) to the following is ________.
(12.67 + 19.2)(3.99) / (1.36 + 11.366) = ________
A) 9.99851
B) 9.9985
C) 9.999
D) 1.00 × 101
E) none of the above
36) The number 1.00430 has ________ significant figures.
A) 2
B) 3
C) 5
D) 6
E) 4
37) The correct result (indicating the proper number of significant figures) of the following addition is
________.
12
1.2
0.12
+ 0.012
A) 13
B) 13.3
C) 13.33
D) 13.332
E) none of the above
38) The correct result (indicating the proper number of significant figures) of the following problem is
________.
0.00032
(12.80184) (0.002843)
A) 113.73635
B) 113.736
C) 113.74
D) 113.7
E) 1.1 × 102
39) The correct result (indicating the proper number of significant figures) of the following calculation of
the molecular mass for H2SO4 is ________.
4 × 15.9994 + 32.066 + 2 × 1.0079
A) 98.08
B) 98.079
C) 98.074
D) 98.838
E) 98.84
40) The volume of a regular cylinder is V =πr2h. Using the value 3.1416 for the constant π, the volume
(cm3) of a cylinder of radius 2.34 cm and height 19.91 cm expressed to the correct number of significant
figures is ________.
A) 342.49471
B) 342.495
C) 342.49
D) 343
E) 342
41) There are ________ significant figures in the answer to the following computation:
1.39
10 (1.79 20.0) – (29.2 5)
A) 1
B) 2
C) 3
D) 4
E) 5
42) There should be ________ significant figures in the answer to the following computation.
2.5
7.395) (10.07 +
A) 1
B) 2
C) 3
D) 4
E) 5
43) ________ significant figures should be retained in the result of the following calculation.
6–
4
10 16.9) (103.05
10 2.6) – (11.13
+
)
A) 1
B) 2
C) 3
D) 4
E) 5
44) The density of a 167.4 g sample of magnesium having a volume of 96.32 mL is ________ g/cm3.
A) 0.5754
B) 7128
C) 3.625
D) 2.663
E) 1.738
45) The output of a plant is 4335 pounds of ball bearings per week (five days). If each ball bearing weighs
0.0113 g, how many ball bearings does the plant make in a single day? (Indicate the number in proper
scientific notation with the appropriate number of significant figures.)
A) 3.84 × 105
B) 7.67 × 104
C) 867
D) 3.48 × 107
E) 2.91 × 106
26
46) The density of mercury is 13.6 g/cm3. The density of mercury is ________ kg/m3.
A) 1.36 × 10-2
B) 1.36 × 104
C) 1.36 × 108
D) 1.36 × 10-5
E) 1.36 × 10-4
47) The distance from the Earth to the Moon is approximately 240,000 miles. If a rocket travels at a speed
of 7.50 km/sec, it will take ________ days to travel between the Earth and Moon.
A) 0.60
B) 1.7
C) 3.9
D) 7.3
E) 5.6
48) 1.55 kg/m3 is equivalent to ________ g/L.
A) 3.58 × 1012
B) 1.95 × 103
C) 6.83
D) 1.60 × 109
E) 1.55
49) An iron mine produces 1.67 × 104 tons of raw ore per day. If the ore is 26.39% elemental iron, the mine
produces ________ pounds of elemental iron per year. (Assume the mine operates 365 days per year.)
A) 1.221 × 1010
B) 8.814 × 106
C) 3.217 × 109
D) 1.611 × 106
E) 3.66 × 1011
50) A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the
27
flask is read to be 126.4 ml. The mass of the water, flask, and metal is 268.5 g. If the mass of the flask is
139.3 g and the density of water is 1.000 g/mL, the density of the solid is ________ g/cm3.
A) 0.366
B) 1.56
C) 0.641
D) 2.78
E) 3.21
51) The quantity 1.0 mg/cm2 is the same as 1.0 × ________ kg/m2.
A) 10-4
B) 102
C) 10-6
D) 10-2
E) 104
52) A rectangular water tank is 14.5 cm long and 4.63 cm wide. If 368.5 g of water completely fills the
tank, the height of the tank is ________ cm. (Assume the density of water is 1.000 g/ml.)
A) 6.45
B) 5.49
C) 14.0
D) 3.68
E) 4.62
53) There are ________ ng in a pg.
A) 0.001
B) 1000
C) 0.01
D) 100
E) 10
54) One edge of a cube is measured and found to be 13 cm. The volume of the cube in m3 is ________.
28
A) 2.2 × 10-3
B) 2.2 × 10-6
C) 2.2
D) 2.2 × 103
E) 2.2 × 106
55) The density of lead is 11.4 g/cm3. The mass of a lead ball with a radius of 0.50 mm is ________ g.
(π = 3.1416; Vsphere = 4πr3/3)
A) 6.0
B) 4.6 × 10-2
C) 4.6 × 10-5
D) 6.0 × 10-3
E) 4.6
1.3 Algorithmic Questions
1) In the following list, only ________ is not an example of matter.
A) people
B) word
C) clock
D) mug
E) neon
2) The symbol for the element phosphorus is ________.
A) Pt
B) K
C) P
D) S
E) Ca
3) The element hydrogen has the symbol ________.
A) H
B) He
C) K
D) B
E) Ar
4) Which one of the following has the element name and symbol correctly matched?
A) Ne, nitrogen
B) Si, sulfur
C) Ca, carbon
D) Be, beryllium
E) None of the symbols are correctly matched to the element name.
5) Which one of the following is a pure substance?
A) tap water
B) rock
C) air
D) elemental oxygen
E) apple
6) The symbol for the element neon is ________.
A) Rb
B) Si
C) Mg
D) Mn
E) Ne
7) The symbol for the element sodium is ________.
A) Me
B) Hg
C) Sn
D) Na
E) Pb
8) Express the temperature, 275.18 K, in degrees Celsius.
A) 548.33 °C
B) 274.17 °C
C) 2.03 °C
D) 120.88 °C
E) 22.78 °C
9) The temperature of 25 °C is ________ in Kelvins.
A) 103
B) 138
C) 166
D) 248
E) 298
10) An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of
a sphere is 9.83 g. If the volume of this sphere is less than ________ cm3, then the sphere will sink in
liquid mercury (density = 13.6 g/cm3).
A) 0.723
B) 1.38
C) 134
D) 7.48
E) none of the above
11) What decimal power does the abbreviation d represent?
A) 1 × 10-2
B) 10
C) 1 × 10-9
D) 1 × 10–1
E) 1 × 103
12) An object measuring 25.0 inches will have a length of ________ centimeters.
A) 63.5
B) 9.84
C) 0.0158
D) 0.102
E) 2.54
13) An object measuring 0.4500 kilograms will have a mass of ________ grams.
A) 450.0
B) 0.0004500
C) 45.00
D) 4.500
E) 2222
14) An object measuring 77 milliliters will have a volume of ________ liters.
A) 0.077
B) 77000
C) 13
D) 7700
E) 770