STRAIGHTERLINE CHEM 101 GENERAL CHEMISTRY GRADED EXAM 6 - APRIL 2022
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Module
CHEM 101
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CHEM 101
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• CHEM101_MH_V4
• Topic 16: Nonmetallic Elements and Organic Chemistry
Started on Thursday, March 24, 2022, 11:12 AM
State Finished
Completed on Thursday, March 24, 2022, 11:48 AM
Time taken 36 mins 25 secs
Grade 110.40 out of 115.00 (96%)
Question 1
Correct
4.60 points out ...
straighterline chem 101 general chemistry graded exam 6 april 2022
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CHEM101_MH_V4
Topic 16: Nonmetallic Elements and Organic Chemistry
Started on Thursday, March 24, 2022, 11:12 AM
State Finished
Completed on Thursday, March 24, 2022, 11:48 AM
Time taken 36 mins 25 secs
Grade 110.40 out of 115.00 (96%)
Question 1
Correct
4.60 points out of 4.60
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Question text
What is ΔS° at 298 K for the following reaction?
Fe2O3(s) + 3CO(g) → 3CO2(g) + 2Fe(s)
Substance ΔG°f(kJ/mol) ΔH°f(kJ/mol)
Fe2O3(s) –741.0 –822.2
CO(g) –137.2 –110.5
, CO2(g) –394.4 –393.5
Select one:
a. 12.7 J/K • mol
b. –12.7 J/K • mol
c. 527.9 J/K • mol
d. 157.2 J/K • mol
e. 4.6 J/K • mol
Question 2
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4.60 points out of 4.60
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In a spontaneous exothermic process,
Select one:
a. system heats up while surroundings lose energy.
b. surroundings heat up, but there is no change in system’s energy.
c. system loses energy while surroundings heat up.
d. system heats up but there is not change in the energy of surroundings.
e. energy content of neither system nor surroundings changes.
Question 3
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4.60 points out of 4.60
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Question text
Ozone (O3) in the atmosphere can react with nitric oxide (NO) as follows.
O3(g) + NO(g) → NO2(g) + O2(g). ΔH°rxn = –199 kJ/mol, ΔS°rxn = –4.1 J/K • mol
What is ΔG°rxn for this reaction at 25°C?
Select one:
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