CHEM 120 Exam 2 (Chamberlain) – Newest 2026/2027 Actual Exam Test Bank | CHEM 120 Introduction to General, Organic & Biological Chemistry Exam 2 Review with 300 Real Exam Questions & Correct Verified Answers – Already Graded A+ (Most Recent!!) – Complete

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, CHEM 120 EXAM 2 (CHAMBERLAIN) NEWEST 2026
ACTUAL EXAM TEST BANK| CHEM 120
INTRODUCTION TO GENERAL, ORGANIC &
BIOLOGICAL CHEMISTRY EXAM 2 REVIEW WITH 300
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+ (MOST RECENT!!)


Question 1
Balance the following equation: H₂ + O₂ → H₂O.
What is the coefficient for O₂?
A. 1
B. 2
C. 3
D. 4

Correct Answer: A

Rationale: Balanced equation: 2H₂ + 1O₂ → 2H₂O. Coefficient
for O₂ is 1.




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,Question 2
Balance: N₂ + H₂ → NH₃. What is the coefficient
for H₂?
A. 1
B. 2
C. 3
D. 4

Correct Answer: C

Rationale: N₂ + 3H₂ → 2NH₃. Coefficient for H₂ is 3.



Question 3
Balance: Fe + O₂ → Fe₂O₃. What is the
coefficient for Fe?
A. 2
B. 3
C. 4
D. 6

Correct Answer: C

Rationale: 4Fe + 3O₂ → 2Fe₂O₃. Coefficient for Fe is 4.


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, Question 4
Balance: C₃H₈ + O₂ → CO₂ + H₂O. What is
the coefficient for O₂?
A. 3
B. 4
C. 5
D. 6

Correct Answer: C

Rationale: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O. Oxygen coefficient =
5.



Question 5
Balance: Al + HCl → AlCl₃ + H₂. What is the
coefficient for HCl?
A. 3
B. 4
C. 5
D. 6

Correct Answer: D

Rationale: 2Al + 6HCl → 2AlCl₃ + 3H₂. HCl coefficient = 6.
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