Basic Chemistry, 2e (Timberlake)
Chapter 2: Measurements
14
Multiple Choice Questions
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1)
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5.21 cm is the same distance as ______.
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A)
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0.0521 m
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B)
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52.1 dm
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C)
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5.21 mm
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D)
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0.00521 km
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E)
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5210 m
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Answer:
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A
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14
2)
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How many centimeters are there in 57.0 in?
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A)
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22 cm
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B)
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0.0445 cm
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C)
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145 cm
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D)
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22.4 cm
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E)
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140 cm
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Answer:
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C
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14
3)
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The measurement of the gravitational pull on an object is its ______.
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A)
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volume
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B)
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weight
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C)
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mass
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D)
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length
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E)
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size
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Answer:
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B
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14
4)
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The amount of space occupied by a substance is its ______.
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A)
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mass
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B)
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density
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C)
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weight
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D)
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length
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E)
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volume
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Answer:
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E
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14
5)
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Which of the following is the basic unit of volume in the metric system?
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A)
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liter
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B)
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kilogram
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C)
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meter
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D)
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centimeter
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E)
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gram
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Answer:
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A
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14
6)
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Which of the following is a measurement of mass in the metric system?
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A)
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milliliter
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B)
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centimeter
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C)
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kilogram
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D)
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Celsius
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E)
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meter
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Answer:
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C
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7)
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A value of 25°C is a measurement of ______.
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A)
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distance
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B)
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volume
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C)
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temperature
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D)
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mass
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E)
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density
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Answer:
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C
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14
8)
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The measurement 0.000 0043 m, expressed correctly using scientific notation, is ______.
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A)
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4.3 × 10-7 m
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B)
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4.3 × 10–6 m
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C)
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4.3 × 106 m
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D)
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0.43 × 10–5 m
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E)
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4.3 m
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Answer:
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B
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14
9)
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The number 680 000 000 expressed correctly using scientific notation is ______.
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A)
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6.8
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B)
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0.68 × 106
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C)
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6.8 × 108
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D)
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68 × 107
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E)
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680 × 106
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Answer:
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C
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14
10)
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Which of the following numbers is the smallest?
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A)
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4.0 × 10–6
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B)
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4.0 × 10–8
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C)
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4.0 × 10–2
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D)
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4.0 × 1015
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E)
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4.0 × 10–12
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Answer:
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E
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14
11)
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Which of the following numbers is the largest?
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A)
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2.05 × 103
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B)
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2.05 × 10–12
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C)
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2.05 × 105
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D)
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2.05 × 108
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E)
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2.05
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Answer:
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D
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14
12)
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Which of the following conversion factors is a measured number?
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A)
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10 cm/dm
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B)
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12 in/ft
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C)
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16 oz/lb
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D)
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25 miles/gallon
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E)
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12 eggs/dozen
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Answer:
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D
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14
13)
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Significant figures are important because they indicate ______.
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A)
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a counted number
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B)
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the number of digits on a calculator
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C)
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the number of measurements
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D)
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the number of digits in a measurement
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E)
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the accuracy of the conversion factor
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Answer:
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D
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14
14)
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Which of the following measurements has three significant figures?
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A)
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0.005 m
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B)
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510 m
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C)
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0.510 m
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D)
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0.051 m
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E)
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5100 m
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Answer:
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C
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14
15)
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Which of the following numbers contains the designated CORRECT number of significant figures?
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A)
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0.043 00 5 significant figures
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B)
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0.00302 2 significant figures
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C)
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156 000 3 significant figures
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D)
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1.04 2 significant figures
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E)
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3.0650 4 significant figures
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Answer:
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C
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14
16)
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The number of significant figures in the measurement of 45.030 mm is ______.
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A)
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none
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B)
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three
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C)
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four
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D)
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five
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E)
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six
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Answer:
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D
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14
17)
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How many significant figures are in the number 0.00208?
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A)
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six
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B)
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two
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C)
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three
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D)
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four
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E)
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five
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Answer:
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C
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14
18)
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Which of the following examples illustrates a number that is correctly rounded to three significant figures?
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A)
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4.05438 grams to 4.054 grams
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B)
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0.03954 grams to 0.040 grams
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C)
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103.692 grams to 103.7 grams
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D)
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109 526 grams to 109 500 grams
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E)
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20.0332 grams to 20.0 grams
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Answer:
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E
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14
19)
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A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?
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A)
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423
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B)
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424
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C)
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420
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D)
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423.6
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E)
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423.7
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Answer:
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B
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14
20)
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Which of the answers for the following conversions contains the correct number of significant figures?
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A)
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2.543 m × = 100.1942 in
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B)
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2 L × = 2.12 qt
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C)
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24.95 min × = 0.4158 hr
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D)
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12.0 ft × × = 370 cm
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E)
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24.0 kg × = 11 lb
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Answer:
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C
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14
21)
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What is the correct answer for the calculation of a volume (in mL) with measured numbers ?
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A)
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0.22 mL
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B)
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0.223 mL
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C)
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57 mL
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D)
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14 mL
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E)
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14.3 mL
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Answer:
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A
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14
22)
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A researcher needed three samples of sodium chloride solution, each with a volume of 0.03510 mL. The total volume needed, if the three volumes are added together, should be reported as ______.
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A)
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0.105 mL
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B)
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0.0105 mL
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C)
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0.10 mL
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D)
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0.10530 mL
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E)
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0.1100 mL
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Answer:
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D
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23)
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What is the answer, with the correct number of significant figures, for this problem?
4.392 g + 102.40 g + 2.51 g =
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A)
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109.302 g
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B)
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109 g
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C)
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109.3 g
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D)
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109.30 g
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E)
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110 g
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Answer:
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D
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14
24)
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The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is ______.
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A)
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13.071 g
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B)
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13 g
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C)
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13.0 g
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D)
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10 g
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E)
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13.1 g
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Answer:
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B
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14
25)
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Which of the following measurements are NOT equivalent?
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A)
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25 mg = 0.025 g
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B)
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183 L = 0.183 kL
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C)
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150 msec = 0.150 sec
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D)
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84 cm = 8.4 mm
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E)
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24 dL = 2.4 L
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Answer:
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D
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14
26)
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In which of the following is the metric unit paired with its correct abbreviation?
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A)
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microgram / mg
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B)
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milliliter / mL
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C)
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centimeter / km
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D)
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kilogram / cg
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E)
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gram / gm
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Answer:
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B
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27)
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Which of the following is the largest unit?
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A)
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millimeter
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B)
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micrometer
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C)
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meter
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D)
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decimeter
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E)
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kilometer
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Answer:
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E
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14
28)
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What is the metric relationship between grams and micrograms?
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A)
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1 g = 100 μg
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B)
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1 g = 1 000 000 μg
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C)
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1 g = 0.000001 μg
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D)
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1 g = 1000 μg
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E)
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1 g = 0.001 μg
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Answer:
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B
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14
29)
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What is the conversion factor for the relationship between millimeters and centimeters?
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A)
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1 mm/1 cm
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B)
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10 mm/1 cm
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C)
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1 cm/1 mm
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D)
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100 mm/1 cm
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E)
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10 cm/1 mm
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Answer:
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B
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14
30)
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Which of the following is the smallest unit?
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A)
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gram
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B)
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milligram
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C)
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kilogram
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D)
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decigram
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E)
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microgram
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Answer:
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E
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14
31)
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The cubic centimeter (c or cc) has the same volume as a ______.
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A)
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cubic inch
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B)
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cubic liter
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C)
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milliliter
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D)
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centimeter
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E)
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cubic decimeter
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Answer:
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C
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14
32)
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9.31 g is the same mass as ______.
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A)
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931 μg
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B)
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931 kg
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C)
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93.1 cg
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D)
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9 310 mg
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E)
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0.0931 dg
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Answer:
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D
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14
33)
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According to the United States Food and Drug Administration, the recommended daily requirement of protein is 44 g. This is ______oz of protein.
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A)
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1248.5
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B)
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320 000
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C)
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1.6
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D)
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0.0605
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E)
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150 000
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Answer:
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C
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14
34)
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Which of the following setups would convert centimeters to feet?
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A)
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cm × ×
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B)
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cm × ×
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C)
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cm × ×
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D)
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cm × ×
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E)
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cm × ×
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Answer:
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C
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35)
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A conversion factor set up correctly to convert 15 inches to centimeters is ______.
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A)
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100 cm/1 m
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B)
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1 inch/2.54 cm
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C)
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1 cm/10 mm
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D)
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2.54 cm/1 inch
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E)
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10 cm/1 inch
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Answer:
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D
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14
36)
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How many pounds are in 3.5 kg?
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A)
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7.7 lb
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B)
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1.59 lb
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C)
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0.629 lb
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D)
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1.6 lb
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E)
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7.70 lb
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Answer:
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A
14
14
37)
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How many liters of soft drink are there in 5.25 qt?
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A)
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4950 L
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B)
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55.7 L
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C)
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4.95 L
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D)
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5.57 L
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E)
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5.0 L
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Answer:
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C
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14
38)
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What is 6.5 m converted to inches?
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A)
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1700 in
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B)
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1651 in
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C)
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39 in
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D)
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260 in
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E)
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255.9 in
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Answer:
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D
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14
39)
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How many kilograms are in 30.4 lb?
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A)
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13.8 kg
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B)
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14 kg
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C)
14
67 kg
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D)
14
66.88 kg
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E)
14
66.9 kg
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Answer:
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A
14
14
40)
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A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold?
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A)
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10.4 g/mL
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B)
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6.77 g/mL
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C)
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1.00 g/mL
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D)
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0.0518 g/mL
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E)
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19.3 g/mL
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Answer:
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E
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14
41)
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A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is ______.
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A)
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19 mg
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B)
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53 mg
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C)
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1.6 mg
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D)
14
5.0 mg
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E)
14
0.59 mg
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Answer:
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A
14
14
42)
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A solution has a density of 1.22g/mL. What volume of the solution has a mass of 48.2 g?
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A)
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0.00253 mL
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B)
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58.8 mL
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C)
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39.5 mL
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D)
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49.4 mL
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E)
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1.22 mL
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Answer:
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C
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14
43)
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Which one of the following substances will float in gasoline, which has a density (d) of 0.66 g/mL?
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A)
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table salt (d = 2.16 g/mL)
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B)
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balsa wood (d = 0.16 g/mL)
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C)
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sugar (d = 1.59 g/mL)
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D)
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aluminum (d = 2.70 g/mL)
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E)
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mercury (d = 13.6 g/mL)
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Answer:
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B
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14
44)
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What is the mass of 2.00 L of a solution with a density of 1.15 g/mL?
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A)
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0.023 kg
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B)
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2.30 kg
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C)
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1.15 kg
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D)
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0.015 kg
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E)
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0.58 kg
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Answer:
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B
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14
45)
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Mercury has a density of 13.6 g/mL. How many milliliters of mercury have a mass of 0.35 kg?
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A)
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0.0257 mL
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B)
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0.026 mL
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C)
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25.7 mL
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D)
14
26 mL
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E)
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4760 mL
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Answer:
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D
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14
46)
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What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL?
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A)
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1.70 g/mL
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B)
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1.7 g/mL