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(Portage) CHEM121 Foundations of General Chemistry (Module 2) - Readiness Exam Guide Q & S 2024 $12.49   Add to cart

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(Portage) CHEM121 Foundations of General Chemistry (Module 2) - Readiness Exam Guide Q & S 2024

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(Portage) CHEM121 Foundations of General Chemistry (Module 2) - Readiness Exam Guide Q & S 2024(Portage) CHEM121 Foundations of General Chemistry (Module 2) - Readiness Exam Guide Q & S 2024(Portage) CHEM121 Foundations of General Chemistry (Module 2) - Readiness Exam Guide Q & S 2024

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  • September 13, 2024
  • 24
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
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MedGrad
CHEM121



Module 2




READINESS EXAM GUIDE
Q&S




©2024/2025

,1. Which of the following is the correct balanced equation
for the combustion of propane (C3H8)?
A) C3H8 + 5O2 → 3CO2 + 4H2O
B) C3H8 + 3O2 → 3CO + 4H2O
C) C3H8 + 5O2 → 3CO + 8H2O
D) C3H8 + 3O2 → 3CO2 + 8H2O
Correct Answer: A

2. In a redox reaction, if the oxidation number of an element
increases, what happens to the other element?
A) It is also oxidized.
B) It is reduced.
C) It remains unchanged.
D) It is neither oxidized nor reduced.
Correct Answer: B

3. What is the molarity of a solution where 58.5 grams of
NaCl are dissolved in 500 mL of water?
A) 0.5 M
B) 1.0 M
C) 2.0 M
D) 4.0 M
Correct Answer: C

4. Given the reaction: 2Al + 6HCl → 2AlCl3 + 3H2, what is
the stoichiometric coefficient for H2 when the equation is
balanced?
A) 1
B) 2
C) 3
D) 6
Correct Answer: C
©2024/2025

, 5. If 40% of a compound is oxygen and the rest is carbon,
what is the empirical formula of the compound?
A) CO2
B) CO
C) C2O
D) C3O2
Correct Answer: B

6. A reaction between an acid and a base produces 0.2
moles of water. If the stoichiometry of the reaction is 1:1,
how many moles of acid were used?
A) 0.1 moles
B) 0.2 moles
C) 0.4 moles
D) 0.8 moles
Correct Answer: B

7. What is the percent composition of carbon in methane
(CH4)?
A) 25%
B) 50%
C) 75%
D) 80%
Correct Answer: D

8. For the balanced reaction 2Fe2O3 + 3C → 4Fe + 3CO2,
what is the mole ratio of Fe2O3 to Fe?
A) 1:2
B) 2:3
C) 1:1
D) 2:4
Correct Answer: A
©2024/2025

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