Question 1

Balance the equation C8H18(l)+ ___ O2(g)→ ___ CO2(g)+ ___ H2O(l).
What is the coefficient for O2(g)?

Accepted Answer

A) 16 
B) 9 
C) 25 
D) 12 
E) 50 
A) 16 
B) 9 
C) 25 
D) 12 
E) 50

Question 2

Phosphoric acid reacts with sodium hydroxide.Write the balanced chemical equation for this reaction.What is the coefficient for sodium hydroxide?

Accepted Answer

A) 3 
B) 6 
C) 2 
D) 1 
E) 4 
A) 3 
B) 6 
C) 2 
D) 1 
E) 4

Question 3

A precipitate forms when magnesium chloride and sodium fluoride solutions are combined.Write the balanced chemical equation for this reaction.What is the sum of the coefficients?

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 9 
E) none of the above 
A) 6 
B) 5 
C) 4 
D) 9 
E) none of the above

Question 4

Consider the hypothetical chemical reaction represented by the equation A + 2 B → 3 C + D Which of the following interpretations of this equation is not correct?

Accepted Answer

A) 1 kg of A reacts with 2 kg of B to form 3 kg of C and 1 kg of D 
B) 1 particle of A reacts with 2 particles of B to form 3 particles of C and 1 particle of D 
C) 1 dozen particles of A reacts with 2 dozen particles of B to form 3 dozen particles of C and 1 dozen particles of D 
D) 1 mole of particles of A reacts with 2 moles of particles of B to form 3 moles of particles of C and 1 mole of particles of D 
E) 1 kilomole of particles of A reacts with 2 kilomoles of particles of B to form 3 kilomoles of particles of C and 1 kilomole of particles of D 
A) 1 kg of A reacts with 2 kg of B to form 3 kg of C and 1 kg of D 
B) 1 particle of A reacts with 2 particles of B to form 3 particles of C and 1 particle of D 
C) 1 dozen particles of A reacts with 2 dozen particles of B to form 3 dozen particles of C and 1 dozen particles of D 
D) 1 mole of particles of A reacts with 2 moles of particles of B to form 3 moles of particles of C and 1 mole of particles of D 
E) 1 kilomole of particles of A reacts with 2 kilomoles of particles of B to form 3 kilomoles of particles of C and 1 kilomole of particles of D

Balance the equation C₈H₁₈_(l)+ _ O₂(g)→ _ CO₂(g)+ ___ H₂O_(l). What is the coefficient for O₂(g)?

Phosphoric acid reacts with sodium hydroxide.Write the balanced chemical equation for this reaction.What is the coefficient for sodium hydroxide?

A precipitate forms when magnesium chloride and sodium fluoride solutions are combined.Write the balanced chemical equation for this reaction.What is the sum of the coefficients?

Consider the hypothetical chemical reaction represented by the equation A + 2 B → 3 C + D Which of the following interpretations of this equation is not correct?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Solutions

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

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Exam 8: Chemical Reactions

Balance the equation C8H18(l)+ ___ O2(g)→ ___ CO2(g)+ ___ H2O(l). What is the coefficient for O2(g)?

Phosphoric acid reacts with sodium hydroxide.Write the balanced chemical equation for this reaction.What is the coefficient for sodium hydroxide?

A precipitate forms when magnesium chloride and sodium fluoride solutions are combined.Write the balanced chemical equation for this reaction.What is the sum of the coefficients?

Consider the hypothetical chemical reaction represented by the equation A + 2 B → 3 C + D Which of the following interpretations of this equation is not correct?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Solutions

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Balance the equation C₈H₁₈_(l)+ _ O₂(g)→ _ CO₂(g)+ ___ H₂O_(l). What is the coefficient for O₂(g)?