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HLTH 1030 Knowledge Questions HLTENN008 LATEST UPDATED
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HLTH 1030 Knowledge Questions HLTENN008 LATEST UPDATED
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2/23/2021
Quiz Submissions - Lesson 2 Quiz
Attempt 1
Written: Dec 29, 2020 2:06 AM - Dec 29, 2020 2:50 AM
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Released: Jan 8, 2021 11:55 PM
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Question 1 0/5
points
A reaction was experimentally determined to follow the rate law, Rate = k[A]2
where k = 0.456 s-1M-1. Starting with [A]o = 0.500 M, how many seconds will it take
for [A]t = 0.250 M?
2.85 x 10-2 s
5.48 x 10-1 s
1.52 s
4.39 s
1.14 x 10-1 s
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Question 2 5/5
points
The elementary steps for the catalyzed decomposition of dinitrogen monoxide are
shown below.
N2O(g) + NO(g) → N2(g) +
NO2(g) NO2(g) → NO(g) +
1/2 O2(g)
Which of the following statements is/are CORRECT?
1) The overall balanced reaction is N2O(g) → N2(g) + 1/2 O2(g).
, 2/23/202
1
2) NO2(g) is a catalyst for the reaction.
3) NO(g) is a reaction intermediate.
2 only
1 and 3
1 only
1, 2, and 3
3 only
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Question 3 5/5
points
The decomposition of ozone may occur through the two-step
mechanism shown: Step 1: O3 → O2 + O
Step 2: O3 + O → 2O2
The oxygen atom is considered to be a(n):
catalyst
activated complex
reactant
product
reaction intermediate
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Question 4 5/5
points
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