Question 1

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

Accepted Answer

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 
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 2

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 3

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

Accepted Answer

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

Question 4

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 5

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?

Accepted Answer

A)  Accurate and precise. 
B)  Precise but not accurate. 
C)  Neither accurate nor precise. 
D)  Accurate but not precise. 
E)  None of the these. 
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 6

How many joules are equivalent to 450 calories?

Accepted Answer

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 
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 7

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

Accepted Answer

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 
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

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

Express 2.260 × 10¹ in fixed notation.

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

Express 0.00580 in exponential notation.

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?

How many joules are equivalent to 450 calories?

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

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

Exam 2: Lets Review: The Tools of Quantitative Chemistry

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

Express 2.260 × 101 in fixed notation.

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

Express 0.00580 in exponential notation.

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?

How many joules are equivalent to 450 calories?

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

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

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

Express 2.260 × 10¹ in fixed notation.