Deck 2: Chemistry and Measurements

Question 1

Which of the answers for the following conversions contains the correct number of significant figures?

A)2.543 m ×
= 100.1942 in
B)2 L ×
= 2.12 qt
C)24.95 min ×
= 0.4158 hr
D)12.0 ft ×
×
= 370 cm
E)24.0 kg ×
= 11 lb

Answer 1

24.95 min ×
= 0.4158 hr

Question 2

How many significant figures are in the measured number 0.00208 m?

A)six
B)two
C)three
D)four
E)five

Answer 2

three

Question 3

The number of significant figures in the measurement of 45.030 mm is

A)none.
B)three.
C)four.
D)five.
E)six.

Answer 3

five.

Question 4

Which of the following is the basic unit of mass in the SI?

A)pound
B)kilogram
C)milligram
D)microgram
E)gram

Question 5

A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?

A)423
B)424
C)420
D)423.6
E)423.7

Question 6

A value of 25 °C is a measurement of

A)distance.
B)volume.
C)temperature.
D)mass.
E)density.

Question 7

Which of the following examples illustrates a number that is correctly rounded to three significant figures?

A)4.05438 grams to 4.054 grams
B)0.03954 grams to 0.040 grams
C)103.692 grams to 103.7 grams
D)109,526 grams to 109 500 grams
E)20.0332 grams to 20.0 grams

Question 8

A value of 345 cm is a measure of

A)density.
B)mass.
C)temperature.
D)volume.
E)distance.

Question 9

A researcher added three samples of sodium chloride solution; the volumes were: 0.351 mL, 0.350 mL and 0.349 mL. The total volume should be reported as

A)1.05 mL.
B)1.0 mL.
C)11 mL.
D)1.050 mL.
E)1.0500 mL.

Question 10

A value of 36 mL is a measure of

A)density.
B)mass.
C)temperature.
D)volume.
E)distance.

Question 11

Which of the following is a measurement of temperature in the metric system?

A)oz
B)lb
C)Celsius
D)kilogram
E)meter

Question 12

Which of the following measurements has three significant figures?

A)0.005 m
B)510 m
C)0.510 m
D)0.051 m
E)5100 m

Question 13

Significant figures are important because they indicate

A)the accuracy of a measurement.
B)the number of digits on a calculator.
C)the number of measurements.
D)the precision of a measurement.
E)the accuracy of the conversion factor.

Question 14

The metric base unit for length is the

A)meter.
B)inch.
C)millimeter.
D)kilometer.
E)foot.

Question 15

The amount of space occupied by a substance is its

A)mass.
B)density.
C)weight.
D)length.
E)volume.

Question 16

The measurement of the gravitational pull on an object is its

A)volume.
B)weight.
C)mass.
D)length.
E)size.

Question 17

The metric unit for volume is the

A)meter.
B)quart.
C)liter.
D)pint.
E)centimeter.

Question 18

Which of the following measured numbers contains the designated CORRECT number of significant figures?

A)0.04300 5 significant figures
B)0.00302 2 significant figures
C)156 000 3 significant figures
D)1.04 2 significant figures
E)3.0650 4 significant figures

Question 19

What is the correct answer for the calculation of a volume (in mL) with measured numbers ?

A)0.22 mL
B)0.223 mL
C)57 mL
D)14 mL
E)14.3 mL

Question 20

Which of the following is a measurement of mass in the metric system?

A)milliliter
B)centimeter
C)kilogram
D)Celsius
E)meter

Question 21

According to the United States Food and Drug Administration, the recommended daily requirement of protein is 44 g. This is ________ oz of protein.

A)1248.5
B)320 000
C)1.6
D)0.0605
E)150 000

Question 22

The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is

A)13.071 g.
B)13 g.
C)13.0 g.
D)10 g.
E)13.1 g.

Question 23

Which of the following is the smallest unit?

A)gram
B)milligram
C)kilogram
D)decigram
E)microgram

Question 24

What is the answer, with the correct number of decimal places, for this problem? 4.392 g + 102.40 g + 2.51 g =

A)109.302 g
B)109 g
C)109.3 g
D)109.30 g
E)110 g

Question 25

Which of the following is the largest unit?

A)millimeter
B)micrometer
C)meter
D)decimeter
E)kilometer

Question 26

How many pounds are in 3.5 kg?

A)7.7 lb
B)1.59 lb
C)0.629 lb
D)1.6 lb
E)7.70 lb

Question 27

How many centimeters are there in 57.0 in.?

A)22 cm
B)0.0445 cm
C)145 cm
D)22.4 cm
E)140 cm

Question 28

What is the correct answer for the calculation ?

A)0.65645
B)0.656
C)0.66
D)1.52
E)1.5

Question 29

Which of the following conversion factors is a measured number?

A)10 cm/dm
B)12 in/ft
C)16 oz/lb
D)25 miles/gallon
E)12 eggs/dozen

Question 30

9.31 g is the same mass as

A)931 μg.
B)931 kg.
C)93.1 cg.
D)9310 mg.
E)0.0931 dg.

Question 31

Which of the following measurements are NOT equivalent?

A)25 mg = 0.025 g
B)183 L = 0.183 kL
C)150. ms = 0.150 s
D)84 cm = 8.4 mm
E)24 dL = 2.4 L

Question 32

A conversion factor set up correctly to convert 15 inches to centimeters is

A)100 cm/1 m.
B)1 inch/2.54 cm.
C)1 cm/10 mm.
D)2.54 cm/1 inch.
E)10 cm/1 inch.

Question 33

Which of the following setups would convert centimeters to feet?

A)cm ×
×
B)cm ×
×
C)cm ×
×
D)cm ×
×
E)cm ×
×

Question 34

The EPA limit for lead in the soil of play areas is 400 ppm. This is the same as

A)400 mg lead in each gram of soil.
B)400 g lead in each kilogram of soil.
C)400 mg lead in each kilogram of soil.
D)400 µg lead in each kilogram of soil.
E)400 µg lead in each milligram of soil.

Question 35

The cubic centimeter (cm3 or cc) has the same volume as a

A)cubic inch.
B)cubic liter.
C)milliliter.
D)centimeter.
E)cubic decimeter.

Question 36

When 2610 + 11.7 + 0.22 are added, the answer to the correct number of decimal places is

A)2621.92.
B)2621.9.
C)2621.
D)2620.
E)2600.

Question 37

What is the metric relationship between grams and micrograms?

A)1 g = 100 μg
B)1 g = 1 000 000 μg
C)1 g = 0.000 001 μg
D)1 g = 1000 μg
E)1 g = 0.001 μg

Question 38

What is the conversion factor for the relationship between millimeters and centimeters?

A)1 mm/1 cm
B)10 mm/1 cm
C)1 cm/1 mm
D)100 mm/1 cm
E)10 cm/1 mm

Question 39

5.21 cm is the same distance as

A)0.0521 m.
B)52.1 dm.
C)5.21 mm.
D)0.00521 km.
E)5210 m.

Question 40

In which of the following is the metric unit paired with its correct abbreviation?

A)microgram / mg
B)milliliter / mL
C)centimeter / km
D)kilogram / cg
E)gram / gm

Question 41

What is the volume of a cube that measures 4.00 cm on each side?

A)16.0 mL
B)64.0 L
C)64.0 mL
D)64.00 mL
E)0.640 L

Question 42

A liquid has a volume of 34.6 mL and a mass of 46.0 g. What is the density of the liquid?

A)1.00 g/mL
B)1.33 g/mL
C)0.752 g/mL
D)1330 g/mL
E)0.663 g/mL

Question 43

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?

A)10.4 g/mL
B)6.77 g/mL
C)1.00 g/mL
D)0.0518 g/mL
E)19.3 g/mL

Question 44

Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g?

A)4.3 cm3
B)4.29 cm3
C)0.233 cm3
D)53 cm3
E)53.2 cm3

Question 45

What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL?

A)1.70 g/mL
B)1.7 g/mL
C)0.59 g/mL
D)0.587 g/mL
E)45.0 g/mL

Question 46

Which one of the following substances will float in gasoline, which has a density of 0.66 g/mL?

A)table salt (density = 2.16 g/mL)
B)balsa wood (density = 0.16 g/mL)
C)sugar (density = 1.59 g/mL)
D)aluminum (density = 2.70 g/mL)
E)mercury (density = 13.6 g/mL)

Question 47

The density of a solution is 0.847 g/mL. Its specific gravity is

A)11.8.
B)0.118.
C)0.847.
D)1.18.
E)1.2.

Question 48

A doctor's order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL. How many milliliters of the suspension are required?

A)0.0025 mL
B)3.0 mL
C)2.5 mL
D)6.3 mL
E)0.0063 mL

Question 49

A driver is traveling at 60 km/h. Is the driver speeding if the speed limit is 45 mph?

A)Yes
B)No

Question 50

How many kilograms are in 30.4 lb?

A)13.8 kg
B)14 kg
C)67 kg
D)66.88 kg
E)66.9 kg

Question 51

How many kilograms are in 30.4 lb?

A)13.8 kg
B)14 kg
C)67 kg
D)66.88 kg
E)66.9 kg

Question 52

Grapes are $1.49 per pound. What is the cost of 1.20 kg of grapes?

A)$3.93
B)$2.73
C)$1.79
D)$0.81
E)$0.56

Question 53

The specific gravity of a solution is 1.18. Its density is

A)11.8 g/mL.
B)0.118 g/mL.
C)0.847 g/mL.
D)1.18 g/mL.
E)1.2 g/mL.

Question 54

What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?

A)0.023 kg
B)2.30 kg
C)1.15 kg
D)0.015 kg
E)0.58 kg

Question 55

What is 6.5 m converted to inches?

A)1700 in
B)1651 in
C)39 in
D)260 in
E)255.9 in

Question 56

1.00 pint of milk has a volume of how many milliliters? (2 pints = 1 quart)

A)472 mL
B)530. mL
C)1000 mL
D)1890 mL
E)106 mL

Question 57

Mercury has a specific gravity of 13.6. How many milliliters of mercury have a mass of 0.35 kg?

A)0.0257 mL
B)0.026 mL
C)25.7 mL
D)26 mL
E)4760 mL

Question 58

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

A)19 mg.
B)53 mg.
C)1.6 mg.
D)5.0 mg.
E)0.59 mg.

Question 59

What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?

A)67.1 g
B)41.9 g
C)42 g
D)67 g
E)53 g

Question 60

How many liters of soft drink are there in 5.25 qt?

A)4950 L
B)55.7 L
C)4.95 L
D)5.57 L
E)5.0 L

Question 61

The number 0.0500 has four significant figures.

Question 62

Round off each of the following to three significant figures.
6.3477 × 10⁴

Question 63

Round off each of the following to three significant figures.
504.85

Question 64

State the number of significant figures in each of the following measurements.
9.00 × 10⁶ g

Question 65

State the number of significant figures in each of the following measurements.
6.1 × 10^-5 mL

Question 66

The liter is a unit of volume in the metric system.

Question 67

State the number of significant figures in each of the following measurements.
75.00 m

Question 68

Round off each of the following to three significant figures.
8.3158

Question 69

Which of the following is often used to determine an individual's percentage of body fat?

A)temperature
B)height
C)weight loss
D)weight gain
E)density

Question 70

State the number of significant figures in each of the following measurements.
0.0005 L

Question 71

State the number of significant figures in each of the following measurements.
0.008 090 cm

Question 72

The ratio of the mass of a substance to its volume is its

A)specific gravity.
B)density.
C)buoyancy.
D)weight.
E)conversion factor.

Question 73

Round off each of the following to three significant figures.
58.5422

Question 74

State the number of significant figures in each of the following measurements.
2.043 × 10⁴ mm

Question 75

The basic unit of mass in the metric system is the pound.

Question 76

Round off each of the following to three significant figures.
25 225

Question 77

State the number of significant figures in each of the following measurements.
28.050 km

Question 78

State the number of significant figures in each of the following measurements.
680 000 km

Question 79

Round off each of the following to three significant figures.
399870

Question 80

A 50.0 mL urine sample has a mass of 50.7 g. The specific gravity of the urine is

A)1.014 g/mL.
B)0.986 g/L.
C)1.01.
D)0.986.
E)50.7.