Deck 1: Matter and Measurement

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Question
Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 × 73.1

A)2796.1481
B)2796.15
C)2796.1
D)2796
E)2.80 × 103
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Question
Which choice describes the behavior of the particles of a liquid?

A)The particles are close together and highly organized.
B)The particles are close together but disorganized.
C)The particles are far apart and very disorganized.
D)None of the choices are correct.
Question
Which number contains four significant figures?

A)3.978
B)0.780
C)0.0085
D)1700
E)Two or more of the numbers contain four significant figures.
Question
Carry out the following calculation and report the answer using the proper number of significant figures: 549.101 + 8.12 + 95.0076 - 651.9

A)3.286
B)0.3286
C)0.33
D)0.3
E)1268.1
Question
Which choice describes the behavior of a solid?

A)A solid has a definite volume,and maintains its shape in any container.
B)A solid has a definite volume,but takes on the shape of its container.
C)A solid has no definite shape or volume.
D)None of the above.
Question
Which quantity is an exact number?

A)3 cars
B)1,000 m
C)2 L
D)453.6 g
Question
Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 + 73.1

A)111
B)111.3
C)111.4
D)111.35
E)111.351
Question
Which number is the largest?

A)4.38 × 103
B)4.38 × 102
C)4.38 × 10-3
D)4.38 × 10-2
E)438
Question
Carry out the following calculation and report the answer using the proper number of significant figures: <strong>Carry out the following calculation and report the answer using the proper number of significant figures:  </strong> A)31.0185 ft/s B)31.01 ft/s C)31.02 ft/s D)31.0 ft/s E)31 ft/s <div style=padding-top: 35px>

A)31.0185 ft/s
B)31.01 ft/s
C)31.02 ft/s
D)31.0 ft/s
E)31 ft/s
Question
Which measurement has the fewest number of significant figures?

A)12.80 m
B)0.1280 m
C)0.001280 m
D)1280 m
E)All of the measurements have the same number of significant figures.
Question
Which is NOT an example of a pure substance?

A)Sugar
B)Air
C)Aluminum foil
D)Water
E)A block of dry ice
Question
Which is an example of a physical change?

A)The rusting of an iron nail
B)The burning of propane in a gas grill
C)Baking cookies
D)Polishing tarnished silver
E)Melting of an ice cube in a glass of soda
Question
The number 0.0035880 expressed correctly using scientific notation is ________.

A)0.0035889
B)3.5880 × 103
C)3.5880 × 10-3
D)3.5880 × 10-4
E)3.588 × 10-3
Question
When 5.5490 × 108 is correctly rounded to three significant figures the number becomes ________.

A)5.55
B)5.55 × 108
C)555
D)554
E)5.54 × 108
Question
The measurement 78,005,760 expressed correctly using scientific notation is ________.

A)7.8005760 × 107
B)7.8005760 × 10-7
C)7.8 × 107
D)7.800576 × 10-7
E)7.800576 × 107
Question
Which state of matter does not have a definite shape or volume?

A)Solid
B)Liquid
C)Gas
D)All of the choices are correct.
Question
When 0.022189 is correctly rounded to two significant figures the number becomes ________.

A)0.02
B)0.022
C)22
D)0.023
Question
When 4.870 × 10-3 is correctly converted to its standard form the number becomes ________.

A)4870
B)4870.
C)0.00487
D)0.004870
E)0.0004870
Question
Which number is the smallest?

A)4.38 × 103
B)4.38 × 102
C)4.38 × 10-3
D)4.38 × 10-2
E)438
Question
In which state of matter are the particles close together and highly organized?

A)Solid
B)Liquid
C)Gas
D)All of the choices are correct.
Question
What is the density of a sample of rubbing alcohol if it has a specific gravity of 0.789?

A)1.27 g/mL
B)0.789 g/mL
C)1.00 g/mL
D)0.895 g/mL
Question
Which length is the longest?

A)12 m
B)12,000 mm
C)12,000 μm
D)12,000 cm
E)0.0012 km
Question
What is the correct metric relationship between milliliters and microliters?

A)1 milliliter = 1 microliter
B)1,000 milliliters = 1 microliter
C)1 milliliter = 1,000 microliters
D)1,000,000 milliliters = 1 microliter
E)1 milliliter = 1,000,000 microliters
Question
The recommended dietary allowance for calcium for teenage children is 1,300 mg per day. If a typical 8.0-fl oz glass of reduced-fat milk contains 298 mg of calcium,how many fluid ounces of milk does a teenager need to drink to get the entire recommended amount of calcium from this milk?

A)4.4 fl oz
B)1.8 fl oz
C)3.5 fl oz
D)35 fl oz
E)32 fl oz
Question
Which volume is equivalent to 225 mL?

A)2.25 × 105 μL
B)2.25 × 102 μL
C)2.25 L
D)2.25 × 10-5 μL
E)0.225 μL
Question
On an autumn day in Washington,DC,the outdoor temperature was 21 °C. What was this outdoor temperature in °F?

A)44 °F
B)57 °F
C)69 °F
D)70 °F
Question
If honey has a density of 1.36 g/mL,what is the mass of 1.25 qt,reported in kilograms?

A)1.60 kg
B)1.6 × 103 kg
C)0.974 kg
D)974 kg
E)1.80 kg
Question
A hiker with hypothermia has a body temperature of 82 °F. What is his body temperature in °C?

A)14 °C
B)28 °C
C)31 °C
D)50 °C
Question
What is the mass in kilograms of an individual who weighs 197 lb?

A)197 kg
B)8.95 kg
C)89.5 kg
D)90 kg
E)433 kg
Question
If a package of nuts weighs 41.3 oz,what is the mass of the package expressed in milligrams?

A)1.17 mg
B)1.17 × 103 mg
C)1.17 × 106 mg
D)117 mg
E)3.00 × 105 mg
Question
What is the mass in grams of 85.32 mL of blood plasma with a density of 1.03 g/mL?

A)85.32 g
B)82.83 g
C)82.8 g
D)87.88 g
E)87.9 g
Question
A syringe has a volume of 5.0 mL. What is this volume in deciliters?

A)0.00050 dL
B)0.0050 dL
C)0.050 dL
D)0.50 dL
E)50. dL
Question
If a balloon has a volume of 21.6 cups,what is the volume of this balloon expressed in L?

A)86.4 L
B)81.51 L
C)5.72 L
D)5.094 L
E)5.09 L
Question
Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?

A) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
B) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
C) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
D) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
Question
Which of the following conversions is correct and expresses the answer using the proper number of significant figures?

A) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
B) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
C) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
D) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)   <div style=padding-top: 35px>
Question
Which metric relationship is INCORRECT?

A)1 milligram = 1,000 grams
B)1 dL = 100 mL
C)1 km = 1,000 m
D)100 cg = 1 g
E)1 liter = 1,000,000 microliters
Question
Which of the following temperatures is the hottest?

A)100 °C
B)100 °F
C)100 K
D)All would feel equally warm.
Question
An oven is set for a temperature of 298 °F. What is the oven temperature in K?

A)166 K
B)421 K
C)148 K
D)571 K
E)439 K
Question
If a tree is 89.5 cm tall,what is the tree's height expressed in yards?

A)0.979 yd
B)6.31 yd
C)18.9 yd
D)35.2 yd
E)227 yd
Question
If a piece of rock has a volume of 0.73 L and a mass of 1524 g,what is the density of the rock in g/mL?

A)2.1 × 103 g/mL
B)0.48 g/mL
C)4.8 × 10-4 g/mL
D)2.1 g/mL
E)2.088 g/mL
Question
The base unit for mass in the metric system is kilograms (kg).
Question
The estimated average daily requirement of folic acid for pregnant females is 520 micrograms. Which accurately expresses this value?

A)520 mg
B)520 Mg
C)520 mG
D)520 μg
Question
Which volume has the most uncertainty associated with the measurement?

A)10 mL
B)10.0 mL
C)10.00 mL
D)All have the same degree of uncertainty.
Question
The density of human urine is normally between 1.003 and 1.030 g/mL,and is often used as a diagnostic tool. If a 25.00 mL sample of urine from a patient has a mass of 26.875 g,how does the density of the urine sample compare to the normal range?

A)The density of the sample is lower than the normal range
B)The density of the sample is greater than the normal range
C)The density of the sample is within the normal range
D)There is insufficient information to make a comparison
Question
A beaker contains 145.675 mL of a saline solution. If 24.2 mL of the saline solution are removed from the beaker,what volume of solution remains?

A)121.475 mL
B)121.4 mL
C)121.5 mL
D)121 mL
Question
A compound cannot be broken down into simpler substances.
Question
The specific gravity of a substance has units of g/mL.
Question
For a person between the ages of 10 and 29,the normal range of blood triglycerides is 53 × 104 mg/dL. What is the correct interpretation of the units in this measurement?

A)milligrams times deciliter
B)micrograms per deciliter
C)megagrams per deciliter
D)milligrams per deciliter
Question
Changes in state such as melting and boiling are physical changes.
Question
8 mL is larger than 8 dL.
Question
A zero counts as a significant figure when it occurs at the end of a number that contains a decimal point.
Question
PVC plastic,which is used in pipes,is an example of a synthetic material.
Question
The water molecules in this image are best described as being in the liquid state. The water molecules in this image are best described as being in the liquid state.  <div style=padding-top: 35px>
Question
An inexact number results from a measurement or observation and contains some uncertainty.
Question
Specific gravity is a quantity that compares the density of a substance with the density of water.
Question
A patient's urine sample has a density of 1.02 g/mL. If 1250 mL of urine was excreted by the patient in one day,what mass of urine was eliminated?

A)1.28 kg
B)1225 g
C)1275 g
D)128 g
Question
Air has a density of 0.001226 g/mL. What volume of air would have a mass of 1.0 lb?

A)2.7 mL
B)815.6 mL
C)37 mL
D)3.7 × 102 L
Question
The base unit for volume in the metric system is liter (L).
Question
If a 185-lb patient is prescribed 145 mg of the cholesterol lowering drug Tricor daily,what dosage is the patient receiving in mg/kg of his body weight?

A)0.784 mg/kg
B)1.28 mg/kg
C)0.356 mg/kg
D)1.72 mg/kg
E)0.580 mg/kg
Question
Nitrogen gas (N2)would properly be classified as a compound.
Question
The temperature 60 °C is higher than 60 °F.
Question
The density of olive oil is greater at 200 °C than at 25 °C.
Question
One Kelvin is the same size as one degree Celsius.
Question
When subtracting 15 from 762.85 the answer should be reported with two significant figures.
Question
In reading a number with a decimal point from left to right,all digits starting with the first nonzero number are significant figures.
Question
The measurement 10.3 cm has more significant figures than the measurement 10.3 m.
Question
The two conversion factors for the equality 1 in = 2.54 cm are properly shown below. The two conversion factors for the equality 1 in = 2.54 cm are properly shown below.  <div style=padding-top: 35px>
Question
Assuming the numbers are measured values,when multiplying 762.85 by 15 the answer should be reported with two significant figures.
Question
The number 900,027,300 has nine significant figures.
Question
The temperature 60 °C is higher than 60 K.
Question
The number 900,027,300 has four significant figures.
Question
The temperature -60 °C is higher than -60 °F.
Question
Elements and compounds are both classified as pure substances.
Question
Dividing a number by 105 is the same as multiplying a number by 10-5.
Question
When the liquid carbon tetrachloride (density = 1.59 g/mL)is added to water,the top layer will be the water layer.
Question
Dissolving sugar in water involves a chemical change.
Question
If the density of a substance is greater than 1 g/mL,the mass of a sample of this substance will be greater than the volume of the sample.
Question
One-thousand (1,000)ms is the same length of time as one (1)μs.
Question
When a piece of magnesium (density = 1.738 g/mL)is placed in a container of liquid carbon tetrachloride (density = 1.59 g/mL),the piece of magnesium will float on top of the carbon tetrachloride.
Question
In scientific notation,a number is written as y × 10x,where x can be any positive or negative number or fraction.
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Deck 1: Matter and Measurement
1
Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 × 73.1

A)2796.1481
B)2796.15
C)2796.1
D)2796
E)2.80 × 103
2.80 × 103
2
Which choice describes the behavior of the particles of a liquid?

A)The particles are close together and highly organized.
B)The particles are close together but disorganized.
C)The particles are far apart and very disorganized.
D)None of the choices are correct.
The particles are close together but disorganized.
3
Which number contains four significant figures?

A)3.978
B)0.780
C)0.0085
D)1700
E)Two or more of the numbers contain four significant figures.
3.978
4
Carry out the following calculation and report the answer using the proper number of significant figures: 549.101 + 8.12 + 95.0076 - 651.9

A)3.286
B)0.3286
C)0.33
D)0.3
E)1268.1
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5
Which choice describes the behavior of a solid?

A)A solid has a definite volume,and maintains its shape in any container.
B)A solid has a definite volume,but takes on the shape of its container.
C)A solid has no definite shape or volume.
D)None of the above.
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6
Which quantity is an exact number?

A)3 cars
B)1,000 m
C)2 L
D)453.6 g
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7
Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 + 73.1

A)111
B)111.3
C)111.4
D)111.35
E)111.351
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8
Which number is the largest?

A)4.38 × 103
B)4.38 × 102
C)4.38 × 10-3
D)4.38 × 10-2
E)438
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9
Carry out the following calculation and report the answer using the proper number of significant figures: <strong>Carry out the following calculation and report the answer using the proper number of significant figures:  </strong> A)31.0185 ft/s B)31.01 ft/s C)31.02 ft/s D)31.0 ft/s E)31 ft/s

A)31.0185 ft/s
B)31.01 ft/s
C)31.02 ft/s
D)31.0 ft/s
E)31 ft/s
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10
Which measurement has the fewest number of significant figures?

A)12.80 m
B)0.1280 m
C)0.001280 m
D)1280 m
E)All of the measurements have the same number of significant figures.
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11
Which is NOT an example of a pure substance?

A)Sugar
B)Air
C)Aluminum foil
D)Water
E)A block of dry ice
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12
Which is an example of a physical change?

A)The rusting of an iron nail
B)The burning of propane in a gas grill
C)Baking cookies
D)Polishing tarnished silver
E)Melting of an ice cube in a glass of soda
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13
The number 0.0035880 expressed correctly using scientific notation is ________.

A)0.0035889
B)3.5880 × 103
C)3.5880 × 10-3
D)3.5880 × 10-4
E)3.588 × 10-3
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14
When 5.5490 × 108 is correctly rounded to three significant figures the number becomes ________.

A)5.55
B)5.55 × 108
C)555
D)554
E)5.54 × 108
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15
The measurement 78,005,760 expressed correctly using scientific notation is ________.

A)7.8005760 × 107
B)7.8005760 × 10-7
C)7.8 × 107
D)7.800576 × 10-7
E)7.800576 × 107
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16
Which state of matter does not have a definite shape or volume?

A)Solid
B)Liquid
C)Gas
D)All of the choices are correct.
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17
When 0.022189 is correctly rounded to two significant figures the number becomes ________.

A)0.02
B)0.022
C)22
D)0.023
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18
When 4.870 × 10-3 is correctly converted to its standard form the number becomes ________.

A)4870
B)4870.
C)0.00487
D)0.004870
E)0.0004870
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19
Which number is the smallest?

A)4.38 × 103
B)4.38 × 102
C)4.38 × 10-3
D)4.38 × 10-2
E)438
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20
In which state of matter are the particles close together and highly organized?

A)Solid
B)Liquid
C)Gas
D)All of the choices are correct.
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21
What is the density of a sample of rubbing alcohol if it has a specific gravity of 0.789?

A)1.27 g/mL
B)0.789 g/mL
C)1.00 g/mL
D)0.895 g/mL
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22
Which length is the longest?

A)12 m
B)12,000 mm
C)12,000 μm
D)12,000 cm
E)0.0012 km
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23
What is the correct metric relationship between milliliters and microliters?

A)1 milliliter = 1 microliter
B)1,000 milliliters = 1 microliter
C)1 milliliter = 1,000 microliters
D)1,000,000 milliliters = 1 microliter
E)1 milliliter = 1,000,000 microliters
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24
The recommended dietary allowance for calcium for teenage children is 1,300 mg per day. If a typical 8.0-fl oz glass of reduced-fat milk contains 298 mg of calcium,how many fluid ounces of milk does a teenager need to drink to get the entire recommended amount of calcium from this milk?

A)4.4 fl oz
B)1.8 fl oz
C)3.5 fl oz
D)35 fl oz
E)32 fl oz
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25
Which volume is equivalent to 225 mL?

A)2.25 × 105 μL
B)2.25 × 102 μL
C)2.25 L
D)2.25 × 10-5 μL
E)0.225 μL
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26
On an autumn day in Washington,DC,the outdoor temperature was 21 °C. What was this outdoor temperature in °F?

A)44 °F
B)57 °F
C)69 °F
D)70 °F
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27
If honey has a density of 1.36 g/mL,what is the mass of 1.25 qt,reported in kilograms?

A)1.60 kg
B)1.6 × 103 kg
C)0.974 kg
D)974 kg
E)1.80 kg
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28
A hiker with hypothermia has a body temperature of 82 °F. What is his body temperature in °C?

A)14 °C
B)28 °C
C)31 °C
D)50 °C
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29
What is the mass in kilograms of an individual who weighs 197 lb?

A)197 kg
B)8.95 kg
C)89.5 kg
D)90 kg
E)433 kg
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30
If a package of nuts weighs 41.3 oz,what is the mass of the package expressed in milligrams?

A)1.17 mg
B)1.17 × 103 mg
C)1.17 × 106 mg
D)117 mg
E)3.00 × 105 mg
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31
What is the mass in grams of 85.32 mL of blood plasma with a density of 1.03 g/mL?

A)85.32 g
B)82.83 g
C)82.8 g
D)87.88 g
E)87.9 g
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32
A syringe has a volume of 5.0 mL. What is this volume in deciliters?

A)0.00050 dL
B)0.0050 dL
C)0.050 dL
D)0.50 dL
E)50. dL
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33
If a balloon has a volume of 21.6 cups,what is the volume of this balloon expressed in L?

A)86.4 L
B)81.51 L
C)5.72 L
D)5.094 L
E)5.09 L
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34
Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?

A) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)
B) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)
C) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)
D) <strong>Which is the proper conversion factor for converting a mass expressed in pounds (lb)to the same mass expressed in grams (g)?</strong> A)   B)   C)   D)
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35
Which of the following conversions is correct and expresses the answer using the proper number of significant figures?

A) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)
B) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)
C) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)
D) <strong>Which of the following conversions is correct and expresses the answer using the proper number of significant figures?</strong> A)   B)   C)   D)
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36
Which metric relationship is INCORRECT?

A)1 milligram = 1,000 grams
B)1 dL = 100 mL
C)1 km = 1,000 m
D)100 cg = 1 g
E)1 liter = 1,000,000 microliters
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37
Which of the following temperatures is the hottest?

A)100 °C
B)100 °F
C)100 K
D)All would feel equally warm.
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38
An oven is set for a temperature of 298 °F. What is the oven temperature in K?

A)166 K
B)421 K
C)148 K
D)571 K
E)439 K
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39
If a tree is 89.5 cm tall,what is the tree's height expressed in yards?

A)0.979 yd
B)6.31 yd
C)18.9 yd
D)35.2 yd
E)227 yd
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40
If a piece of rock has a volume of 0.73 L and a mass of 1524 g,what is the density of the rock in g/mL?

A)2.1 × 103 g/mL
B)0.48 g/mL
C)4.8 × 10-4 g/mL
D)2.1 g/mL
E)2.088 g/mL
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41
The base unit for mass in the metric system is kilograms (kg).
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42
The estimated average daily requirement of folic acid for pregnant females is 520 micrograms. Which accurately expresses this value?

A)520 mg
B)520 Mg
C)520 mG
D)520 μg
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43
Which volume has the most uncertainty associated with the measurement?

A)10 mL
B)10.0 mL
C)10.00 mL
D)All have the same degree of uncertainty.
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44
The density of human urine is normally between 1.003 and 1.030 g/mL,and is often used as a diagnostic tool. If a 25.00 mL sample of urine from a patient has a mass of 26.875 g,how does the density of the urine sample compare to the normal range?

A)The density of the sample is lower than the normal range
B)The density of the sample is greater than the normal range
C)The density of the sample is within the normal range
D)There is insufficient information to make a comparison
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45
A beaker contains 145.675 mL of a saline solution. If 24.2 mL of the saline solution are removed from the beaker,what volume of solution remains?

A)121.475 mL
B)121.4 mL
C)121.5 mL
D)121 mL
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46
A compound cannot be broken down into simpler substances.
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47
The specific gravity of a substance has units of g/mL.
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48
For a person between the ages of 10 and 29,the normal range of blood triglycerides is 53 × 104 mg/dL. What is the correct interpretation of the units in this measurement?

A)milligrams times deciliter
B)micrograms per deciliter
C)megagrams per deciliter
D)milligrams per deciliter
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49
Changes in state such as melting and boiling are physical changes.
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50
8 mL is larger than 8 dL.
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51
A zero counts as a significant figure when it occurs at the end of a number that contains a decimal point.
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52
PVC plastic,which is used in pipes,is an example of a synthetic material.
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53
The water molecules in this image are best described as being in the liquid state. The water molecules in this image are best described as being in the liquid state.
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54
An inexact number results from a measurement or observation and contains some uncertainty.
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55
Specific gravity is a quantity that compares the density of a substance with the density of water.
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56
A patient's urine sample has a density of 1.02 g/mL. If 1250 mL of urine was excreted by the patient in one day,what mass of urine was eliminated?

A)1.28 kg
B)1225 g
C)1275 g
D)128 g
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57
Air has a density of 0.001226 g/mL. What volume of air would have a mass of 1.0 lb?

A)2.7 mL
B)815.6 mL
C)37 mL
D)3.7 × 102 L
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58
The base unit for volume in the metric system is liter (L).
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59
If a 185-lb patient is prescribed 145 mg of the cholesterol lowering drug Tricor daily,what dosage is the patient receiving in mg/kg of his body weight?

A)0.784 mg/kg
B)1.28 mg/kg
C)0.356 mg/kg
D)1.72 mg/kg
E)0.580 mg/kg
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60
Nitrogen gas (N2)would properly be classified as a compound.
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61
The temperature 60 °C is higher than 60 °F.
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62
The density of olive oil is greater at 200 °C than at 25 °C.
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63
One Kelvin is the same size as one degree Celsius.
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64
When subtracting 15 from 762.85 the answer should be reported with two significant figures.
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65
In reading a number with a decimal point from left to right,all digits starting with the first nonzero number are significant figures.
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66
The measurement 10.3 cm has more significant figures than the measurement 10.3 m.
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67
The two conversion factors for the equality 1 in = 2.54 cm are properly shown below. The two conversion factors for the equality 1 in = 2.54 cm are properly shown below.
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68
Assuming the numbers are measured values,when multiplying 762.85 by 15 the answer should be reported with two significant figures.
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69
The number 900,027,300 has nine significant figures.
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70
The temperature 60 °C is higher than 60 K.
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71
The number 900,027,300 has four significant figures.
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72
The temperature -60 °C is higher than -60 °F.
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73
Elements and compounds are both classified as pure substances.
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74
Dividing a number by 105 is the same as multiplying a number by 10-5.
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75
When the liquid carbon tetrachloride (density = 1.59 g/mL)is added to water,the top layer will be the water layer.
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76
Dissolving sugar in water involves a chemical change.
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77
If the density of a substance is greater than 1 g/mL,the mass of a sample of this substance will be greater than the volume of the sample.
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78
One-thousand (1,000)ms is the same length of time as one (1)μs.
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79
When a piece of magnesium (density = 1.738 g/mL)is placed in a container of liquid carbon tetrachloride (density = 1.59 g/mL),the piece of magnesium will float on top of the carbon tetrachloride.
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80
In scientific notation,a number is written as y × 10x,where x can be any positive or negative number or fraction.
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