Chemistry: The Central Science 11th Edition Test Bank | Brown et al. | Verified Exam Questions

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,22) "Absolute zero" refers to __________.
A) 0 Kelvin
B) 0° Fahrenheit
C) 0° Celsius
D) °C + 9/5(°F - 32)
E) 273.15°C
Answer: A
Diff: 1 Page Ref:Sec. 1.4

23) 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
Answer: A
Diff: 3 Page Ref:Sec. 1.4

24) The density (in g/cm3 ) of a gold nugget that has a volume of 1.68 cm3 and a mass of 32.4 g is __________.
A) 0.0519
B) 19.3
C) 54.4
D) 0.0184
E) 32.4
Answer: B
Diff: 1 Page Ref:Sec. 1.4

25) The density of silver is 10.5 g/cm3 . A piece of silver with a mass of 61.3 g would occupy a
volume of __________ cm3 .
A) 0.171
B) 644
C) 10.5
D) 0.00155
E) 5.84
Answer: E
Diff: 2 Page Ref:Sec. 1.4

26) The density of silver is 10.5 g/cm3 . A piece of silver that occupies a volume of 23.6 cm3 would have a
mass of __________g.
A) 248
B) 0.445
C) 2.25
D) 112
E) 23.6
Answer: A
Diff: 2 Page Ref:Sec. 1.4




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,27) A certain liquid has a density of 2.67 g/cm3 . 1340 g of this liquid would occupy a volume of __________ L.
A) 1.99 × 10−3
B) 50.2
C) 3.58
D) 35.8
E) 0.502
Answer: E
Diff: 2 Page Ref:Sec. 1.4

28) A certain liquid has a density of 2.67 g/cm3 . 30.5 mL of this liquid would have a mass of __________ Kg.
A) 81.4
B) 11.4
C) 0.0875
D) 0.0814
E) 0.0114
Answer: D
Diff: 2 Page Ref:Sec. 1.4

29) Osmium has a density of 22.6 g/cm3 . The mass of a block of osmium that measures
1.01 cm × 0.233 cm × 0.648 cm is __________ g.
A) 6.75 × 10−3
B) 3.45
C) 148
D) 6.75 × 103
E) 34.5
Answer: B
Diff: 3 Page Ref:Sec. 1.4

30) 3.337 g/cm3 = __________ kg/cm3
A) 3.337 × 10−9
B) 3.337 × 10−5
C) 3337
D) 0.3337
E) 333.7
Answer: C
Diff: 2 Page Ref:Sec. 1.4

31) The number 0.00430 has __________ significant figures.
A) 2
B) 3
C) 5
D) 6
E) 4
Answer: B
Diff: 1 Page Ref:Sec. 1.4




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,32) The number 1.00430 has __________ significant figures.
A) 2
B) 3
C) 5
D) 6
E) 4
Answer: D
Diff: 1 Page Ref:Sec. 1.4

33) 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
Answer: A
Diff: 2 Page Ref:Sec. 1.4

34) One side of a cube measures 1.55 m. The volume of this cube is __________ cm3 .
A) 2.40 × 104
B) 3.72 × 106
C) 2.40
D) 3.72
E) 155
Answer: B
Diff: 4 Page Ref:Sec. 1.4

35) The length of the side of a cube (in cm) having a volume of 44.4 L is __________.
A) 875
B) 35.4
C) 6.66
D) 66.6
E) 0.354
Answer: B
Diff: 4 Page Ref:Sec. 1.4

36) 45 m/s = __________ km/hr
A) 2.7
B) 0.045
C) 1.6 × 102
D) 2.7 × 103
E) 1.6 × 105
Answer: C
Diff: 2 Page Ref:Sec. 1.4




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,37) 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/s 2 )
is __________. (Assume that the rate of acceleration is constant.)
A) 1.6 × 105
B) 255
C) 193
D) 4.24
E) 1.53 × 104
Answer: D
Diff: 4 Page Ref:Sec. 1.4

38) 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
Answer: A
Diff: 2 Page Ref:Sec. 1.5

(0.002843)(12.80184)
39) = __________
0.00032
A) 113.73635
B) 113.736
C) 113.74
D) 113.7
E) 1.1 × 102
Answer: E
Diff: 3 Page Ref:Sec. 1.5

40) The correct result of the molecular mass calculation for H 2SO 4 is ________.

4 × 15.9994 + 32.066 + 2 × 1.0079

A) 98.08
B) 98.079
C) 98.074
D) 98.838
E) 98.84
Answer: B
Diff: 3 Page Ref:Sec. 1.5




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41) The volume of a regular cylinder is V = πr 2 h . 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
Answer: E
Diff: 4 Page Ref:Sec. 1.5

42) There are __________ significant figures in the answer to the following computation:

(29.2 - 20.0) (1.79 × 105 )
1.39
A) 1
B) 2
C) 3
D) 4
E) 5
Answer: B
Diff: 1 Page Ref:Sec. 1.5

43) There should be __________ significant figures in the answer to the following computation.

(10.07 + 7.395)
2.5
A) 1
B) 2
C) 3
D) 4
E) 5
Answer: B
Diff: 2 Page Ref:Sec. 1.5

44) __________ significant figures should be retained in the result of the following calculation.

(11.13 - 2.6) × 104
(103.05 + 16.9) × 10-6
A) 1
B) 2
C) 3
D) 4
E) 5
Answer: B
Diff: 2 Page Ref:Sec. 1.5




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