Deck 2: Lets Review: The Tools of Quantitative Chemistry

Question 1

Which of the following volumes are equivalent to 75 L? 1.75 cm³
2)7.5 × 10⁴ mL
3)0.0075 kL

A) 1 only
B) 2 only
C) 3 only
D) 1 and 2
E) 1,2,and 3

Answer 1

2 only

Question 2

Light with a wavelength of 1.5 × 10^-8 m is in the X-ray region of the electromagnetic spectrum.What is the wavelength of this light in picometers (pm)?

A) 1.5 × 10^-80 pm
B) 1.5 × 10^-20 pm
C) 1.5 × 10^-1 pm
D) 1.5 × 10⁴ pm
E) 1.5 × 10⁷ pm

Answer 2

1.5 × 10⁴ pm

Question 3

The melting point of a certain solid is -27°C.This corresponds to

A) 9°F.
B) -33°F.
C) -17°F.
D) -106°F.
E) 17°F.

Answer 3

-17°F.

Question 4

Which of the following is not a base SI unit?

A) meter
B) kelvin
C) calorie
D) second
E) mole

Question 5

The SI base unit of length is the ____.

A) newton
B) liter
C) meter
D) candela
E) Ångstrom unit

Question 6

The distance between atoms is sometimes given in picometers,where 1 pm is equivalent to 1 × 10^-12 m.If the distance between the layers of atoms in a particular compound is given as 328 pm,what is the distance in cm?

A) 3.28 × 10^-6 cm
B) 3.28 × 10^-14 cm
C) 3.28 × 10^-12 cm
D) 3.28 × 10^-8 cm
E) 3.28 × 10^-10 cm

Question 7

The boiling point of liquid argon is 87.3 K.What is the boiling point in Celsius degrees?

A) 189.1 °C
B) -185.9 °C
C) 87.3 °C
D) 360.5 °C
E) -210.7 °C

Question 8

Which of the following is the smallest mass?

A) 1.5 × 10⁸ pg
B) 1.5 × 10⁶ ng
C) 1.5 × 10³ μg
D) 1.5 × 10^-1 mg
E) 1.5 × 10^-5 g

Question 9

Which of the following is the largest volume?

A) 5.0 × 10² cm³
B) 5.0 × 10^-4 L
C) 5.0 × 10³ mL
D) 5.0 × 10^-1 L
E) 5.0 × 10⁵ μL

Question 10

The SI unit of temperature is the ____.

A) kelvin
B) calorie
C) Fahrenheit
D) Ångstrom
E) kilocalorie

Question 11

In the area of nanotechnology,particles defined as nanoparticles range in size from 1 nm to 2500 nm.One nm is equivalent to 1 × 10^-9 m.If the size of the particles that make up a particular material is 5.34 × 10^-8 cm,what is this size in nanometers?

A) 53,400 nm
B) 5.34 nm
C) 0.534 nm
D) 5340 nm
E) 534 nm

Question 12

A particular liquid boils at -374°F.What is its boiling point on the Kelvin scale?

A) 83 K
B) 65 K
C) 47 K
D) 97 K
E) 165 K

Question 13

Which is the largest mass?

A) 10 dg
B) 10 ng
C) 10 mg
D) 10 pg
E) 10 cg

Question 14

7.2 seconds contain this many picoseconds.

A) 7.2 × 10⁹
B) 7.2 × 10¹²
C) 7.2 × 10^-9
D) 7.2 × 10^-12
E) 7.2 × 10¹⁵

Question 15

Which method is correct for converting kelvin to Celsius?

A)
B)
C)
D)
E)

Question 16

How many joules are equivalent to 450 calories?

A) 0.45 J
B) 4.5 × 10² J
C) 9.3 × 10^-3 J
D) 1.9 × 10³ J
E) 4.5 × 10⁵ J

Question 17

Express the volume 622.8 cm³ in liters.

A) 6.228 L
B) 0.06228 L
C) 0.6228 L
D) 62.28 L
E) 622.8 L

Question 18

The wavelength of light emitted from a particular red diode laser is 651 nm.What is the wavelength in meters?

A) 6.51 × 10¹¹ m
B) 6.51 × 10^-2 m
C) 6.51 × 10^-4 m
D) 6.51 × 10^-7 m
E) 6.51 × 10^-9 m

Question 19

The melting point of a solid is 39 °F.This corresponds to _____.

A) 295 K
B) 312 K
C) 286 K
D) 277 K
E) 312 K.

Question 20

The melting point of a particular solid is 2863 K.This corresponds to

A) 4694°F.
B) 3136°C.
C) 2529°C.
D) 4630°F.
E) 1471°F.

Question 21

How many nutritional calories are equivalent to 1150 kJ?

A) 0.10 Cal
B) 1.15 Cal
C) 275 Cal
D) 4.8 × 10³ Cal
E) 3.6 × 10^-3 Cal

Question 22

Express 2.260 × 10¹ in fixed notation.

A) 0.2260
B) 2.260.
C) 2.260
D) 22.6
E) 22.60

Question 23

As the standard deviation of an average of several measurements increases,_____.

A) the accuracy of the measurement increases.
B) the precision of the measurement increases.
C) the accuracy and precision of the measurement decreases.
D) the accuracy of the measurement decreases.
E) the precision of the measurement decreases.

Question 24

The figure below depicts a shooting target.The black dots represent the shots fired by a shooter. Which of the following best describes the shooter's results?

A) Accurate and precise.
B) Precise but not accurate.
C) Neither accurate nor precise.
D) Accurate but not precise.
E) None of the these.

Question 25

How many significant figures are there in the number 4.700?

A) 1
B) 5
C) 3
D) 4
E) 2

Question 26

Using the rules of significant figures,calculate the following:

A) 4.825
B) 4.8249
C) 4.8
D) 4.82
E) 4.82486

Question 27

Assuming a large number of measurements is used to calculate the average of measurements,slightly more than _____ of the values collected are expected to be within two standard deviations

A) 50%
B) 68%
C) 83%
D) 95%
E) 100%

Question 28

Carry out the following calculation and report your answer to the correct number of sig figs:

A) 1.6
B) 1.57
C) 1.566
D) 1.5662
E) 1.56625

Question 29

The number of significant figures in 2.1948 × 10^-9 nm is _____.

A) 5
B) 6
C) 3
D) 7
E) 4

Question 30

The volume of space occupied by a beryllium atom is 6.0 × 10^-30 m³.What is this volume in units of nm³?

A) 6.0 × 10^-57 nm
B) 6.0 × 10^-21 nm
C) 6.0 × 10^-12 nm
D) 6.0 × 10^-3 nm
E) 6.0 × 10⁶ nm

Question 31

How many significant figures are there in the value 0.0490 g/mL?

A) 4
B) 3
C) 2
D) 5
E) 6

Question 32

Calculate the following:

A) 1 × 10^-220
B) 1 × 10⁵⁴⁰
C) 1 × 10^-740
D) 1 × 10^-940
E) 1 × 10^-420

Question 33

A student uses a balance to determine the mass of an object as 5.719 grams.The correct mass of the object is 5.586 grams.What is the percent error in the student's mass determination?

A) 2.38%
B) 0.133%
C) 13.3%
D) 74.3%
E) 97.7%

Question 34

Convert 0.390 ng to milligrams and express the answer in scientific notation using the correct number of significant figures.

A) 3.90 × 10^-5 mg
B) 3.90 × 10^-7 mg
C) 3.9 × 10^-7 mg
D) 0.390 × 10^-8 mg
E) 0.390 × 10^-7 mg

Question 35

Convert 1.400× 10^-8 liters to nanoliters and express the answer in fixed notation using the correct number of significant figures.

A) 14 nL
B) 14.0 nL
C) 14.00 nL
D) 1.40 nL
E) 0.1400 nL

Question 36

Express the result of the following calculation in scientific notation: 437 cm × 885 cm

A) 38.7 × 10⁴ cm²
B) 38.7 × 10⁵ cm²
C) 4 × 10⁴ cm²
D) 4 × 10⁶ cm²
E) 4 × 10⁵ cm²

Question 37

Using the rules of significant figures,calculate the following: (2.335 + 7.026)÷ 2.57 = _____

A) 3.642
B) 3.6424
C) 3.6
D) 3.64
E) 3.64241

Question 38

Round 0.00274485 to 1 significant figure.

A) 0.00
B) 0.003
C) 0.0027
D) 0.00274
E) 0.002745

Question 39

Express 0.00580 in exponential notation.

A) 5.80 × 10³
B) 5.8 × 10^-3
C) 5.80 × 10^-3
D) 5.8 × 10³
E) 5.800 × 10^-3

Question 40

Express the result of the following calculation in scientific notation: 0.0573 cm² ÷ 81.8 cm

A) 7 × 10⁵ cm
B) 7 × 10⁴ cm
C) 7 × 10^-3 cm
D) 7 × 10^-4 cm
E) 1 × 10³ cm

Question 41

A 4.75 cm³ sample of solid gallium metal has a density of 5.910 g/cm³.What volume does this sample of gallium occupy in its liquid state? The density of liquid gallium is 6.100 g/cm³.

A) 4.60 cm³
B) 4.90 cm³
C) 0.13 cm³
D) 171.00 cm³
E) 0.20 cm³

Question 42

What volume of a pure liquid (density 0.720 g/mL)has a mass of 0.420 kg?

A) 5.83 × 10² mL
B) 1.71 × 10^-3 mL
C) 3.02 × 10^-1 mL
D) 1.710 × 10⁵ mL
E) 5.83 × 10^-1 mL

Question 43

A piece of metal (mass = 17.268 g)is placed in 10.50 mL of chloroform (d = 1.498 g/mL)in a 25-mL graduated cylinder.The chloroform level increases to 15.46 mL.The best value for density of this metal from these data is

A) 1.12 g/mL.
B) 2.32 g/mL.
C) 3.481 g/mL.
D) 5.22 g/mL.
E) 3.48 g/mL.

Question 44

You can identify a metal by carefully determining its density.A 29.51 g sample of an unknown metal is 1.50 cm long,2.50 cm wide,and 1.00 cm thick.What is the possible identity of the element?

A) Nickel; density = 8.90 g/cm³
B) Aluminum; density = 2.70 g/cm³
C) Silver; density = 10.5 g/cm³
D) Iron; density = 7.87 g/cm³
E) Chromium; density = 7.20 g/cm³

Question 45

The SI unit for the diffusion coefficient is m²/s,but older texts sometimes report diffusion coefficients in units of in²/min.What is the value of a diffusion coefficient of 21.3 in²/min expressed in SI units? (2.54 cm = 1 in exactly)

A) 9.02 × 10^-3 m²/s
B) 3.25 × 10⁵ m²/s
C) 14.0 m²/s
D) 5.50 × 10² m²/s
E) 2.29 × 10^-4 m²/s

Question 46

What is the volume of a cube that has an edge length of 0.011 m?

A) 1.3 × 10^-3 m³
B) 1.3 × 10^-3 km³
C) 1.3 × 10^-3 cm³
D) 1.3 × 10^-3 mm³
E) 1.3 cm³

Question 47

The speed of light in a vacuum is 3.00 × 10⁸ m/s.What is the speed of light in units of kilometers per hour?

A) 1.20 × 10^-2 km/hr
B) 8.33 × 10¹ km/hr
C) 8.33 × 10⁷ km/hr
D) 1.08 × 10⁹ km/hr
E) 1.08 × 10¹⁵ km/hr

Question 48

What length of a cylindrical piece of tungsten wire having a radius of 2.27 mm has a mass of 10.0 g? The density of tungsten is 19.25 g/cm³ and Volume = πr²h.

A) 3.21 × 10^-4 m
B) 3.12 × 10¹ m
C) 3.21 × 10^-2 m
D) 3.12 × 10^-1 m
E) 3.12 × 10^-3 m

Question 49

Calcium carbonate,or limestone,is relatively insoluble in water.At 25 °C,only 5.8 mg will dissolve in 1.0 liter of water.What volume of water is needed to dissolve 5.0 g of calcium carbonate?

A) 4.6 × 10^-3 L
B) 3.0 × 10^-2 L
C) 1.4 × 10² L
D) 3.4 × 10² L
E) 8.6 × 10² L

Question 50

A cylinder has a radius of 2.38 mm and a height of 175 mm.Calculate the volume of the cylinder in liters.(Volume = πr²h)

A) 3.11 × 10^-3 L
B) 3.11 × 10^-2 L
C) 0.311 L
D) 3.11 L
E) 3.11 × 10³ L

Question 51

How many feet (ft)make up 0.397 km if 1 mi = 1.609 km and 5280 ft = 1 mi?

A) 1303.10 ft
B) ft
C) ft
D) 3370.000 ft
E) ft

Question 52

Silver chloride (AgCl)is relatively insoluble in water.At 25 °C,1.3 × 10³ L of water is needed to dissolve 2.5 g of AgCl.What mass (in milligrams)of AgCl will dissolve in 1.0 L of water?

A) 1.9 × 10^-3 mg
B) 1.9 mg
C) 0.52 mg
D) 520 mg
E) 1.9 × 10^-6 mg

Question 53

A car averages 26.5 miles per gallon of gasoline.How many liters of gasoline will be needed for a trip of 621 km? Some conversion factors that may be helpful are the following: 1 qt = 0.946 L 1 mile = 1.609 km 4 qt = 1 gal (exact)1 ft = 12 in (exact)

A) 6 × 10¹ L
B) 7 × 10³ L
C) 3 × 10³ L
D) 1 × 10² L
E) 4 × 10⁴ L

Question 54

How many 500-mg aspirin tablets can be made from 50.0 kg of aspirin?

A) 10,000,000
B) 1,000,000
C) 1000
D) 10,000
E) 100,000

Question 55

Calculate the mass of silver that occupies the same volume as 22.1 g of cobalt.The density of cobalt is 8.90 g/cm³ and the density of silver is 10.50 g/cm³.

A) 4.23 g
B) 26.1 g
C) 2 × 10³ g
D) 0.0534 g
E) 0.236 g

Question 56

A thin sheet of iridium metal that is 2.70 cm by 5.93 cm has a mass of 16.1 g and a thickness of 0.444 mm.What is the density of iridium?

A) 22.600 g/cm³
B) 2.270 g/cm³
C) 1.14 × 10² g/cm³
D) 0.044 g/cm³
E) 0.442 g/cm³

Question 57

How many cubic millimeters equal one cubic meter?

A) 10⁴
B) 10^-9
C) 10³
D) 10⁹
E) 10^-3

Question 58

Convert 42.12 cm³ to cubic inches (in³)given that 1 inch = 2.54 cm (exact).

A) 2.570 in³
B) 16.580 in³
C) 107.0 in³
D) 690.200 in³
E) 0.3890 in³

Question 59

The density of a particular solid is 7.62 g/cm³ at 25°C.What is its density in kilograms per cubic meter (kg/m³)?

A) 7.62 × 10¹⁰
B) 7.62 × 10¹
C) 7.62 × 10^-2
D) 7.62 × 10³
E) 7.62 × 10⁷

Question 60

If a gallon (3.78 L)of latex paint can cover 365 ft² of the surface of a wall,what is the average thickness of one coat of paint (in millimeters)? (12 in = 1 ft,2.54 cm = 1 in)

A) 1.11 × 10^-1 mm
B) 2.83 × 10^-1 mm
C) 4.64 × 10^-1 mm
D) 4.89 × 10^-1 mm
E) 3.40 mm

Question 61

Which of the following statements about dimensional analysis is true?

A) It is a general problem-solving approach that uses the dimensions or units of each value to guide us through calculations.
B) It is a problem-solving approach that guides us through calculations without using conversion factors.
C) It is a method of calculation that uses graphs for deriving exact values.
D) It is a method of calculation that does not require the use of a conversion factor.
E) It is a problem-solving approach that takes into consideration the standard deviation values.

Question 62

The absolute zero point on the Kelvin scale is equal to _____.

A) -273.15 °C
B) 0 °C
C) 14.5 °C
D) 25 °C
E) -373.15 ⁰C

Question 63

Which response has the correct number of significant figures and units for the following mathematical operation? ​

A) 2.206 × 10^-5 J/cal
B) 2 × 10^-5 kcal
C) 2.206 × 10^-5 kcal
D) 2.21 × 10^-5 kcal
E) 2.2 × 10^-5 kcal

Question 64

​Express the number 0.000160 in scientific notation.

A) ​0.16 × 10^-3
B) ​1.6 × 10⁴
C) ​1.6 × 10²
D) ​1.6 ​× 10^-4
E) 160 ​​× 10^-6

Question 65

The distance from Austin,Texas,to Lincoln,Nebraska,is 822 miles by car.Which of the following series of calculations will yield this distance in units of kilometers? (1 in = 2.54 cm (exact),1 mi = 5280 ft (exact),1 ft = 12 in (exact))

A)
B)
C)
D)
E)

Question 66

A graph of a certain set of data is shown to be linear with a trendline of y = 32.0x + 8.What is the sign and slope of the trendline obtained from this data?

A) positive,32.0
B) negative,32.0
C) positive,8
D) negative,8
E) positive,40.0

Question 67

The average speed of oxygen molecules at 570°C is 1.49 × 10⁵ cm/s.Which of the following calculations would convert this speed to units of miles per hour?

A)
B)
C)
D)
E)