Chemistry Chapter 2 Which one of the following numbers does not have four

Introductory Chemistry: Atoms First, 5e (Russo/Silver)

Chapter 2 The Numerical Side of Chemistry

2.1 Multiple-Choice Questions

1) Identify the exact number.

A) a number of coins

B) the diameter of a coin

C) the radius of a coin

D) the mass of a coin

2) Identify the piece of glassware that provides the least precise volume measurement of a liquid.

A) beaker

B) graduated cylinder

C) buret

D) pipette

3) Which of the following represents an estimated measurement?

A) A calendar week has 7 days.

B) The U.S. national debt is 6 trillion dollars.

C) There are 50 states in the United States of America.

D) My bank account contains 19 dollars and 26 cents.

4) For the measured value 6.73 pounds, what is the degree of uncertainty?

A) +/- 10 pounds

B) +/- 1 pound

C) +/- 0.1 pound

D) +/- 0.01 pound

5) How many significant figures are in 43.8001?

A) 2

B) 3

C) 4

D) 6

6) Which one of the following numbers does not have four significant figures?

A) 1.007 g

B) 0.0007 g

C) 1.070 g

D) 1700. g

E) 1.700 g

7) Round off 907,506 to four significant figures.

A) 9.075 × 10-5

B) 9.075 × 105

C) 9,075

D) 90,751

E) 908,000

8) How many significant digits are present n the number 6046.2?

A) 4

B) 3

C) 5

D) 1

9) How many significant digits are present in the number 0.02560?

A) 3

B) 4

C) 5

D) 6

10) How many significant figures are present in 0.00123, 7000, and 1.519 × 10-2?

A) 6, 4, 4

B) 4, 1, 1

C) 7, 1, 4

D) 3, 1, 4

11) The number 0.0040600 has ________ trailing zeros.

A) 0

B) 1

C) 2

D) 6

12) The correct scientific notation for 147.8 × 10-3 is ________.

A) 1.478

B) 1478 × 10-4

C) 1.478 × 10-1

D) 1.478 × 10-5

13) Convert 0.000001546 mi to scientific notation.

A) 1.546 × 106 mi

B) 1.546 × 105 mi

C) 1.546 × 10-5 mi

D) 1.546 × 10-6 mi

14) The number 0.0247 expressed in scientific notation is ________.

A) 2.47 × 10-4

B) 2.47 × 10-2

C) 2.47 × 10-1

D) 24.7

15) The number 0.00003007 expressed in scientific notation is ________.

A) 3.007 × 10-5

B) 3.007 × 105

C) 3.007

D) 3.007 × 104

E) 3.7 × 10-5

16) Express the number 1.06 × 10-4 in standard notation.

A) 10,600

B) 106

C) 0.0106

D) 0.000106

5

17) The United States has the unit of currency dollars (unit symbol: $). Which of the following is

a proper expression of the value seventy seven hundred dollars +/- 1 dollar?

A) $ 7.7 × 10+4

B) $ 7.7 × 10+3

C) $ 7700

D) $ 7.700 × 10+3

18) By how many places must the decimal point of the number 0.0000814 be moved in order to

express this same number in a standard scientific notation?

A) 4

B) 5

C) 6

D) 7

19) For the final sum of 544.36 + 455.64, the number of significant figures is ________.

A) 6

B) 5

C) 4

D) 2

E) 1

20) The correct answer for the operation (5.61 + 7.891 ) / 9.1 is ________.

A) 4.86

B) 4.8646714

C) 1.5

D) 5.0

21) Using the rules of significant figures, calculate the following: 14.8903 – 2.14 =

A) 12.750

B) 12.75

C) 13

D) 12.7503

E) 12

22) The sum for the operation 1.2315 + 0.116 + 15.10 is ________.

A) 16

B) 16.4

C) 16.45

D) 16.4475

23) Which of the following operations will give an answer of 50.1?

A) 29.75 + 20.3

B) 58.23 – 8.1

C) 26.255 × 1.91

D) all of the above

24) Which of the following operations will not give an answer of 73.3?

A) 63.75 × 1.15

B) 90.0 – 16.67

C) 60.15 + 13.26

D) 12.161 × 6.03

25) The correct answer in the operation below is ________.

(30.004 cm × 14.01 g) / 6.08 cm2

A) 69.1375 g/cm

B) 69.14 g/cm

C) 69.1 g/cm

D) 69.138 g/cm

26) Which of the following is defined as the quantity of matter in a sample that is independent of

where it is measured?

A) weight

B) mass

C) volume

D) both A and B

27) Which of the following is not an SI unit that is used in chemistry?

A) s

B) K

C) kg

D) quart

28) Which is the SI unit for mass?

A) kilogram

B) pound

C) gram

D) ounce

29) Which is the SI unit for temperature?

A) Fahrenheit

B) Celsius

C) Kelvin

D) either A or C

30) Which is the SI unit for length?

A) meter

B) inch

C) kilometer

D) mile

31) Which is the SI unit for time?

A) year

B) day

C) minute

D) second

32) Which is a derived SI unit?

A) J

B) m

C) K

D) s

33) Which is not a derived SI unit?

A) Pa

B) J

C) C

D) s

34) The prefix used to indicate 10-12 is ________.

A) micro-

B) nano-

C) pico-

D) giga-

35) What is the prefix for the multiplier 1 × 106?

A) micro-

B) nano-

C) mega-

D) kilo-

36) What is the prefix for the multiplier 1 × 10-6?

A) micro-

B) nano-

C) mega-

D) kilo-

37) 10 millimeters are equal to ________ nanometers.

A) 107

B) 10-7

C) 103

D) 10-3

38) How many kilograms are in 452 mg?

A) 4.52 × 10-7 kg

B) 4.52 × 10-4 kg

C) 0.452 kg

D) 4.52 × 108 kg

39) 465.000 g is equivalent to ________.

A) 0.0465 kg

B) 465,000 mg

C) 4.65 kg

D) 465,000 ng

40) Which of the following numbers expresses the value 2600. calories with both the correct

units and proper scientific notation?

A) 2.6 × 104 kcal

B) 2.600 × 103 cal

C) 2.60 × 103 mcal

D) 26 × 102 dcal

41) In order to convert 121 dm to mm one needs to multiply by ________.

A) 107

B) 102

C) 10-2

D) 10-5

42) Which of the following does not measure temperature?

A) °C

B) °F

C) K

D) J

43) 68 °F is equal to ________.

A) 37 °C

B) 32 °C

C) 25 °C

D) 20. °C

44) 40. °C is equal to ________ K.

A) 313

B) 293

C) 263

D) 233

45) A liquid boils at 68 °F at one atmosphere pressure. This is equal to ________ K.

A) 341

B) 205

C) 253

D) 293

46) Which is the lowest temperature?

A) 40 °C

B) 104 °F

C) 313 K

D) All of them are about the same.

47) Which of the following is the hottest temperature?

A) 90 °C

B) 104 °F

C) 353 K

D) All of the above are the same.

48) Which of the following is coldest temperature?

A) -40 °C

B) -40 °F

C) 210 K

D) All of the above are the same.

49) The correct order of decreasing temperatures in the set below is ________.

A) 18 °C > 80 °F > 280 K

B) 280 K > 18 °C > 80 °F

C) 80 °F > 18 °C > 280 K

D) 80 °F > 280 K > 18 °C

50) Which of the following temperatures are not possible?

A) 2000 °C

B) -425 °F

C) -425 °C

D) 5 K

51) The units of density for a liquid are usually expressed as ________.

A) g/mL

B) g/L

C) mg/mL

D) mg/L

52) What is the density of a piece of wood that weighs 62 grams and displaces 0.525 L of water?

A) 120 g/mL

B) 0.12 g/mL

C) 0.0080 g/mL

D) 8.5 g/mL

53) If the density of aluminum is 2.70 g/ cm3, the mass of 10.0 cm3 of this material is ________.

A) 27.0 g

B) 2.70 g

C) 3.70 g

D) 0.270 g

54) The density of a 4.0 cm3 sample of a metal is 11.3 g/cm3. What is the density of 8.0 cm3

sample of the same metal?

A) 11.3 g/ mL

B) 22.6 g/ mL

C) 5.65 g/ mL

D) 2.0 g/ mL

55) A popular science demonstration is to take several liquids that will not mix together and

“stack” these liquids in a tall glass cylinder. Suppose the following three liquids were placed in

the same tall, narrow glass cylinder:

SUBSTANCE

DENSITY g/mL

vinegar

1.01

motor oil

0.87

corn syrup

1.36

The substance that should be placed first in the cylinder so that it is on the bottom is ________.

A) vinegar

B) motor oil

C) corn syrup

D) cannot be determined

56) The density of copper is about 8.96 g/mL. This means that a certain mass of copper will

________.

A) occupy the same volume as the same mass of water

B) occupy a volume 8.96 times larger than the volume occupied by the same mass of water

C) occupy a volume that is 8.96 times smaller than the volume occupied by the same mass of

water

D) always occupy a volume of 8.96 mL

57) Ethanol has a density of 0.789 g/mL. This means that a certain volume of ethanol will

________.

A) weigh more than an equal volume of water

B) weigh less than an equal volume of water

C) weigh exactly the same as an equal volume of water

D) always weigh 0.8 g

58) An 80.0 g sample of metal A displaces 20.0 mL of water, while a 56.0 g sample of metal B

displaces 14.0 mL of water. The conclusion one may draw from this information is that

________.

A) A and B are the same metal

B) A and B are not the same metal

C) A and B may be the same metal, but more studies are needed to decide if they are the same

D) The above results tell us nothing about the nature of A and B.

59) 164.0 g of a substance occupy a volume of 120.0 mL. In relation to water, which statement is

true?

A) The substance will float in water.

B) The substance will sink in water.

C) The substance will react with water.

D) The substance is a metal.

60) 20.5 g of a liquid has a volume of 15 mL. What is the density?

A) 1 g/mL

B) 1.3 g/mL

C) 1.4 g/mL

D) 1.36 g/mL

61) Which statement is true?

A) 1 mm = 0.0394 in.

B) 1 cm3 = 1 mL

C) 1 g = 0.0022 lb

D) All of the above are true.

62) 5 gallons is equal to ________ quarts.

A) 5

B) 10

C) 20

D) 40

63) The closest number of grams that is equivalent to 0.745 lb is ________.

A) 338

B) 3.379

C) 0.338

D) 1.64 × 10-3

64) One thousand yards are equivalent to ________.

A) 9.14 × 10-2 mm

B) 9.14 × 102 m

C) 12,000 in

D) 1,094 m

65) How many moles of copper are present in 128 grams of copper (for copper, 1 mole = 63.546

grams)?

A) 0.496 moles

B) 8134 moles

C) 8.13 × 10-3 moles

D) 2.01 moles

66) If the speed limit is 60. mi/hr, its equivalent in km/hr is ________.

A) 38

B) 97

C) 27

D) 123

67) If the speed limit is 120 km/hr, its equivalent in mi/hr is ________.

A) 75

B) 192

C) 133

D) 210

68) A person is 6 ft 10 in tall. This is equivalent to ________ m.

A) 2.08 m

B) 2.69 m

C) 3.22 m

D) 1.68 m

69) The density of aluminum is 2.7 g/mL. This is equivalent to ________ kg/m3.

A) 2.7 × 104

B) 2.7

C) 0.27

D) 2.7 × 103

70) How many cm2 are there in 5.20 in2?

A) 33.5

B) 13.2

C) 2.05

D) 0.806

71) The distance of the 220-yard race is equivalent to ________ ft.

A) 660

B) 2,640

C) 7.92 × 103

D) 73.3

72) The world record for the 100-meter dash is 9.8 s. If the world record holding runner could

maintain the same pace when running five kilometers, he would cover the distance in ________.

A) 9.8 min

B) 8.2 min

C) 1.6 min

D) 5.1 min

73) Which of the following is the shortest?

A) 18 inches

B) 0.58 m

C) 580 mm

D) 1.9 ft

74) Which of the following has the greatest mass?

A) 4.4 lb

B) 2.0 kg

C) 165 oz

D) 2.0 × 103 g

75) The dietary energy requirement for an adult is 2000 kcal per day. This is equivalent to

________.

A) 478 J

B) 8.37 J

C) 47.8 kJ

D) 8.37 × 103 kJ

76) 20.9 kJ is equal to ________ kcal.

A) 5,000

B) 5.00

C) 873.6

D) 20

77) Convert 250.0 kcal to Joules.

A) 250.0 J

B) 5.975 × 104 J

C) 1.046 × 106 J

D) 1.046 × 103 J

78) 500 cal are added to 10 g of water (specific heat of 1.000 cal/g °C) originally at 20 °C. The

final temperature is ________.

A) 70 °C

B) 50 °C

C) 25 °C

D) 22.5 °C

79) 10. g of a certain metal absorb 40. cal of heat and the temperature is observed to rise from

20. °C to 60. °C. The specific heat of this metal is ________ cal/g °C.

A) 0.050

B) 0.10

C) 0.16

D) 0.40