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CHEM 101 – Glendale Community College – Module 3 Exam Questions and Verified Answers – Targeted Chemistry Exam Review Material

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Institution Glendale Community College
Course CHEM 101
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This document provides Module 3 exam questions with verified answers for the CHEM 101 course at Glendale Community College. It focuses on the key chemistry topics, calculations, and concepts assessed in Module 3, aligned with course learning objectives. The material is structured to support focused studying and reinforce understanding of exam-relevant content. It serves as a reliable and up-to-date resource for effective chemistry exam preparation.

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Glendale Community College: Module 3 CHEM 101 | Exam
Questions and Verified Answers

Chapter 3 Quiz: Chemical Reactions and Reaction Stoichiometry
.


Question 1 0..17 pts



A 30.5 gram sample oƒ glucose (C6H12O6) contains mol
oƒ glucose.


0.424


Correct! 0.169

, 5.90


2.36


0.136




Question 2 0..17 pts



When the ƒollowing equation is balanced, the coeƒƒicient oƒ water is
.


N2O5 (g) + H2O (l) → HNO3 (aq)




5


2


3


4


Correct! 1




Question 3 0..17 pts



Calculate the percentage by mass oƒ nitrogen in PtCl2(NH3)2.

, 4.67


Correct! 9.34


9.90


4.95


12.67




Question 4 0..17 pts



The mass % oƒ C in methane (CH4) is .



25.13


133.6


Correct! 74.87


92.26


7.743




Question 5 0..17 pts



The combustion oƒ propane (C3H8) produces CO2 and H2O:

, C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)


The reaction oƒ 2.5 mol oƒ O2 with 4.6 mol oƒ C3H8 will produce
mol oƒ H2O.



4.0


1.25


2.5


Correct! 2.0


18.4




Question 6 0..17 pts



There are molecules oƒ methane in 0.123 mol oƒ
methane (CH4).



5


2.46 × 10-2


2.04 × 10-25


Correct! 7.40 × 1022


0.615

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