Question 1

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

Accepted Answer

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

Question 2

Assuming the density of water is 1.00 g/cm3, the mass of 1.0 cubic meter (m3) of water is _____
g.

Accepted Answer

Question 3

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

Accepted Answer

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 
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 4

What is the difference between the accuracy of measurements and the precision of measurements?

Accepted Answer

Accuracy is an indicator of how close a

Question 5

The volume of a carbon atom is 1.9 × 10-30 m3. What is the approximate radius of the atom in picometers (pm)? The volume of a sphere is (4/3)πr3.

Accepted Answer

A)  77 pm 
B)  520 pm 
C)  770 pm 
D)  3.0 × 102 pm 
E)  52 pm 
A)  77 pm 
B)  520 pm 
C)  770 pm 
D)  3.0 × 102 pm 
E)  52 pm

Question 6

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.

Accepted Answer

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 
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 7

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

Accepted Answer

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

Question 8

How many cubic millimeters equal one cubic meter?

Accepted Answer

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

Question 9

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)

Accepted Answer

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 
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 10

Express 0.00580 in exponential notation.

Accepted Answer

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

Question 11

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?

Accepted Answer

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 
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 12

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?

Accepted Answer

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 
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 13

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?

Accepted Answer

A)  $\frac { 1 \mathrm {~s} } { 1.49 \times 10 ^ { 5 } } \times \frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } } \times \frac { 1 \mathrm { ft } } { 12 \mathrm { in } } \times \frac { 1 \mathrm { mi } } { 5280 \mathrm { ft } } \times \frac { 3600 \mathrm {~s} } { 1 \mathrm {~h} }$ 
B)  $\frac { 1.49 \times 10 ^ { 5 } } { 1 \mathrm {~s} } \times \frac { 1 \mathrm { in } } { 2.54 \mathrm {~cm} } \times \frac { 12 \mathrm { in } } { 1 \mathrm { ft } } \times \frac { 5280 \mathrm { ft } } { 1 \mathrm { mi } } \times \frac { 1 \mathrm {~h} } { 3600 \mathrm {~s} }$ 
C)  $\frac { 1.49 \times 10 ^ { 5 } } { 1 \mathrm {~s} } \times \frac { 1 \mathrm { in } } { 2.54 \mathrm {~cm} } \times \frac { 1 \mathrm { ft } } { 12 \mathrm { in } } \times \frac { 1 \mathrm { mi } } { 5280 \mathrm { ft } } \times \frac { 3600 \mathrm {~s} } { 1 \mathrm {~h} }$ 
D)  $\frac { 1.49 \times 10 ^ { 5 } } { 1 \mathrm {~s} } \times \frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } } \times \frac { 12 \mathrm { in } } { 1 \mathrm { ft } } \times \frac { 5280 \mathrm { ft } } { 1 \mathrm { mi } } \times \frac { 3600 \mathrm {~s} } { 1 \mathrm {~h} }$ 
E)  $\frac { 1 \mathrm {~s} } { 1.49 \times 10 ^ { 5 } } \times \frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } } \times \frac { 12 \mathrm { in } } { 1 \mathrm { ft } } \times \frac { 5280 \mathrm { ft } } { 1 \mathrm { mi } } \times \frac { 1 \mathrm {~h} } { 3600 \mathrm {~s} }$ 
A)  $\frac { 1 \mathrm {~s} } { 1.49 \times 10 ^ { 5 } } \times \frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } } \times \frac { 1 \mathrm { ft } } { 12 \mathrm { in } } \times \frac { 1 \mathrm { mi } } { 5280 \mathrm { ft } } \times \frac { 3600 \mathrm {~s} } { 1 \mathrm {~h} }$ 
B)  $\frac { 1.49 \times 10 ^ { 5 } } { 1 \mathrm {~s} } \times \frac { 1 \mathrm { in } } { 2.54 \mathrm {~cm} } \times \frac { 12 \mathrm { in } } { 1 \mathrm { ft } } \times \frac { 5280 \mathrm { ft } } { 1 \mathrm { mi } } \times \frac { 1 \mathrm {~h} } { 3600 \mathrm {~s} }$ 
C)  $\frac { 1.49 \times 10 ^ { 5 } } { 1 \mathrm {~s} } \times \frac { 1 \mathrm { in } } { 2.54 \mathrm {~cm} } \times \frac { 1 \mathrm { ft } } { 12 \mathrm { in } } \times \frac { 1 \mathrm { mi } } { 5280 \mathrm { ft } } \times \frac { 3600 \mathrm {~s} } { 1 \mathrm {~h} }$ 
D)  $\frac { 1.49 \times 10 ^ { 5 } } { 1 \mathrm {~s} } \times \frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } } \times \frac { 12 \mathrm { in } } { 1 \mathrm { ft } } \times \frac { 5280 \mathrm { ft } } { 1 \mathrm { mi } } \times \frac { 3600 \mathrm {~s} } { 1 \mathrm {~h} }$ 
E)  $\frac { 1 \mathrm {~s} } { 1.49 \times 10 ^ { 5 } } \times \frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } } \times \frac { 12 \mathrm { in } } { 1 \mathrm { ft } } \times \frac { 5280 \mathrm { ft } } { 1 \mathrm { mi } } \times \frac { 1 \mathrm {~h} } { 3600 \mathrm {~s} }$

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

Order the four metric units provided from smallest to largest. 
1) liter 
2) centiliter 
3) microliter 
4) milliliter

Accepted Answer

A)  liter < centiliter < milliliter < microliter 
B)  microliter < milliliter < centiliter < liter 
C)  milliliter < microliter < centiliter < liter 
D)  centiliter < microliter < liter < milliliter 
E)  liter < centiliter < microliter < milliliter 
A)  liter < centiliter < milliliter < microliter 
B)  microliter < milliliter < centiliter < liter 
C)  milliliter < microliter < centiliter < liter 
D)  centiliter < microliter < liter < milliliter 
E)  liter < centiliter < microliter < milliliter

Question 18

Express 2.260 × 101 in fixed notation.

Accepted Answer

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

Question 19

Which method is correct for converting kelvin to Celsius?

Accepted Answer

A)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \left( \frac { 5 ^ { \circ } \mathrm { C } } { 9 \mathrm {~K} } \right) \mathrm { T } ( \mathrm { K } ) + 32$ 
B)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \left( \frac { 9 ^ { \circ } \mathrm { C } } { 5 \mathrm {~K} } \right) \mathrm { T } ( \mathrm { K } ) + 273.15$ 
C)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \frac { 5 ^ { \circ } \mathrm { C } } { 9 \mathrm {~K} } ( \mathrm {~T} ( \mathrm {~K} ) - 273.15 )$ 
D)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \frac { 1 ^ { \circ } \mathrm { C } } { 1 \mathrm {~K} } ( \mathrm {~T} ( \mathrm {~K} ) - 273.15 )$ 
E)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \frac { 1 ^ { \circ } \mathrm { C } } { 1 \mathrm {~K} } ( \mathrm {~T} ( \mathrm {~K} ) + 273.15 )$ 
A)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \left( \frac { 5 ^ { \circ } \mathrm { C } } { 9 \mathrm {~K} } \right) \mathrm { T } ( \mathrm { K } ) + 32$ 
B)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \left( \frac { 9 ^ { \circ } \mathrm { C } } { 5 \mathrm {~K} } \right) \mathrm { T } ( \mathrm { K } ) + 273.15$ 
C)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \frac { 5 ^ { \circ } \mathrm { C } } { 9 \mathrm {~K} } ( \mathrm {~T} ( \mathrm {~K} ) - 273.15 )$ 
D)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \frac { 1 ^ { \circ } \mathrm { C } } { 1 \mathrm {~K} } ( \mathrm {~T} ( \mathrm {~K} ) - 273.15 )$ 
E)  $\mathrm { T } \left( { } ^ { \circ } \mathrm { C } \right) = \frac { 1 ^ { \circ } \mathrm { C } } { 1 \mathrm {~K} } ( \mathrm {~T} ( \mathrm {~K} ) + 273.15 )$

Question 20

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

Accepted Answer

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

Exam 2: Lets Review: the Tools of Quantitative Chemistry

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

Assuming the density of water is 1.00 g/cm3, the mass of 1.0 cubic meter (m3) of water is _____ g.

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

What is the difference between the accuracy of measurements and the precision of measurements?

The volume of a carbon atom is 1.9 × 10-30 m3. What is the approximate radius of the atom in picometers (pm)? The volume of a sphere is (4/3)πr3.

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.

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

How many cubic millimeters equal one cubic meter?

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)

Express 0.00580 in exponential notation.

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?

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?

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

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

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

Order the four metric units provided from smallest to largest. 1) liter 2) centiliter 3) microliter 4) milliliter

Express 2.260 × 101 in fixed notation.

Which method is correct for converting kelvin to Celsius?

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

Basic Concepts of Chemistry

Atoms, Molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical Reactivity: Electron Transfer Reactions

Environmental Chemistry: Earths Environment, Energy, and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

Assuming the density of water is 1.00 g/cm³, the mass of 1.0 cubic meter (m³) of water is _____ g.

The volume of a carbon atom is 1.9 × 10^-30 m³. What is the approximate radius of the atom in picometers (pm)? The volume of a sphere is (4/3)πr³.

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.

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

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)

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?

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?

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?

Express 2.260 × 10¹ in fixed notation.