Quiz #3 Session #1_ Chem 1LE W24
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CHEM 1LE
Subject
Chemistry
Date
Feb 20, 2024
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7
Uploaded by AdmiralFog8928
2024/2/6 14:40
Quiz #3 Session #1: Chem 1LE W24
https://canvas.eee.uci.edu/courses/59678/quizzes/300102
1/7
Quiz #3 Session #1
Due
Feb 6 at 11:59pm
Points
10
Questions
8
Time Limit
None
Allowed Attempts
3
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
9 minutes
10 out of 10
Correct answers are hidden.
Score for this attempt: 10
out of 10
Submitted Feb 6 at 2:40pm
This attempt took 9 minutes.
The information needed to answer these questions can be found in your general chemistry lecture
textbook, the Lab Safety for Chemists online text
(https://drive.google.com/file/d/1zGrN2CkyKk-
UejhEa277V-VPzfgf-TLr/view?usp=sharing) (Section 2.1.2) and in documents hyperlinked within this
document. Take the Quiz Again
2 / 2 pts
Question 1
A NaOH (aq) stock solution was created by dissolving 3.88 g NaOH in
water to create a 100.00 mL solution. What is the concentration of this
solution? [ Select ]
M
Perform a ten fold dilution to create three more solutions. What are the
concentrations of these solutions?
Dilution #1: [ Select ]
M
Dilution #2: 0.0097 M
2024/2/6 14:40
Quiz #3 Session #1: Chem 1LE W24
https://canvas.eee.uci.edu/courses/59678/quizzes/300102
2/7
Answer 1:
Answer 2:
Answer 3:
Answer 4:
Dilution #3: 0.00097 M
0.970 0.0970 0.0097 0.00097 1 / 1 pts
Question 2
Why is significant?
max
The value indicates the amount of light absorbed. The value can indicate the observed color of solution. The value increases as the energy of light increases. The instrument response is highest at that wavelength. The value is can be used to identify a particular chemical. 2 / 2 pts
Question 3
Fill in the table with the correct responses.
Reaction
Order
Integrated
Rate Law
Linear
Plot
Rate
constant
Half
life
2024/2/6 14:40
Quiz #3 Session #1: Chem 1LE W24
https://canvas.eee.uci.edu/courses/59678/quizzes/300102
3/7
(k) from
the linear
plot
(t
)
zero
[a]
[b]
[c]
[d]
first
[e]
[f]
[g]
[h]
second
[i]
[j]
[k]
[l]
Answer bank:
1. 1/A = kt + 1/A
2. ln A vs time
3. negative of the slope (-m)
4. log A vs time
5. A = -kt + A
6. A
/k
7. A
/2k
8. y-intercept
9. A vs time
10. slope (m)
11. A = kt + A
12. 1/A vs t
13. lnA = -kt + lnA
14. ln2/k
15. 1/kA
1/2
t
o
t
o
t
o
t
o
t
o
o
a
5
b
9
c
3
Your preview ends here
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2024/2/6 14:40
Quiz #3 Session #1: Chem 1LE W24
https://canvas.eee.uci.edu/courses/59678/quizzes/300102
4/7
d
7
e
13
f
2
g
3
h
14
i
1
j
12
k
10
l
15
1 / 1 pts
Question 4
The following plot
(https://canvas.eee.uci.edu/courses/59678/files/24522285/download?
download_frd=1) is from a kinetics run of crystal violet and sodium
hydroxide.
2024/2/6 14:40
Quiz #3 Session #1: Chem 1LE W24
https://canvas.eee.uci.edu/courses/59678/quizzes/300102
5/7
Which of the following is the pseudo rate law for the reaction?
A. Rate = k[CV
][ OH]
B. Rate = k
C. Rate = k
[CV ]
D. Rate = k[CV
]
E. Rate = k[CV
][ OH]
+
-
1
1
+
+ 2
+
-
2
D B E A C 1 / 1 pts
Question 5
In the Fundamental Skills section of this experiment, you will be
instructed combine the reaction mixture, place it into a cuvette and
immediately place it into the spectrometer. The light source in the
spectrometer is warms the solution inserted into its beam. Warming the
solution will change the
2024/2/6 14:40
Quiz #3 Session #1: Chem 1LE W24
https://canvas.eee.uci.edu/courses/59678/quizzes/300102
6/7
(Multiple answers are possible.)
color of the final solution slope of the linear plot from the integrated rate law type of reaction occurring reaction order rate constant, k 1 / 1 pts
Question 6
Match Fire Class
with the fuel for the fire.
A
paper, clothing, plastic
B
gasoline, oil, organic s
C
hot plates, computers
D
reactive metals (sodium
1 / 1 pts
Question 7
Which of the following statements are true about fire? More than 1
answer can be correct.
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7/7
Removing heat keeps the fuel from vaporizing. Fires are classified by what type of oxidizing agents are involved. The fuel must be vaporized to burn. Water cannot be used to extinguish a class D fire. Water can be used to extinguish a class B fire. 1 / 1 pts
Question 8
Look up information about bleach, NaOCl(aq). Which of the following
are true statements?
Bleach forms poisonous chlorine & chloramine gas when combine with
ammonia
If a significant amount of bleach is spilled on you, get into the safety
shower.
Bleach can cause severe skin burns and eye damage. Nitrile gloves are have a 480 min breakthrough time for bleach. Bleach is a weak reducing agent. Quiz Score: 10
out of 10
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Calculate the mass fraction of Ca in calcium bromate.
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- Rapidly cool to 625°C (1155°F), hold at this temperature for 10 s, rapidly cool to 400°C (750°F), hold at this temperature for 5 s, then quench to room temperature. martensite % proeutectoid ferrite bainite fine pearlite austenite i eTextbook and Mediaarrow_forwardTrial [I0:] [HSO: ] Time Rate [HSO3 ]/time 1 49 25 3 16.9 Table-2 Find the concentrations of [IO3] and [HSO3] and enter into the table. Divide the concentration of HSO3 with the time in seconds to get the rate. Volume is assumed to be additive in this experiment. Thus, the total volume of all the solutins is assumed to be 20.0 mL. This introduces a small error that can be considered insignicant. The concentrations of IO; and HSO, (after mixing but before the reaction begins) can be calculated using the relationship: Mailute Vdilute= Mcone Vcone. A sample calculation is shown below for the concentration of IO, in Trial 1: Mailute to be calculated Vdilue 20.0 mL 0.020 M x 2.0 mL Mcone 0.020M V conc 2.0 mL %3D diluted [IO, ] = = 0.0020 M IO, %3D 20.0 mL Similarly, the concentration of HSO; in Trial 1 is calculated thus: 0.010 M x 2.0 mL diluted [HSO, ] =0.0010 M HSO, 20.0 mLarrow_forward26) The floor tiles in SE 27 are about 1 square foot and the lab is about 25 tiles wide and about 36 tiles from front to back. When the emergency shower was demonstrated, in 10. seconds the water in the trash can was about 1 foot deep. One student estimated this was 2.5 gallons. Estimate how deep the room will get in inches after a 15 minute shower. List 3 simplifving assumptions you make in this calculation rea L-36 Tile fiDw ill it cost2 The density of gold is 27l An artist plans to apply gold leaf to a painting with an area of 2.32 f? and a thickness of 1.50arrow_forward
- With the image attached please do the calculations/calculate what is highlighted in yellow please Please also calculate - percent % error in molar mass - percent % error in pKa Please please please answer as fast as possiblearrow_forwardPlz answer correctly in 20 minutes plz it's very urgentarrow_forwardPlease answer fast it’s very important and urgent I say very urgent so please answer super super fast please For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.466arrow_forward
- Hey, I need help with question one. These problems are for us to study, not for a grade. It's only practice.arrow_forwardBa(NO,l(aq) + K,SOlaq) Baso(s) + 2 KNOlaq) Volume Volume Trial 0.10 M Ba(NO)2 (ml) 0.10 M K,SO, (ml) Mass Baso4 (s) Limiting Reagent 50. 20. 0.46 50. 40. 0.92 3 50. 50. 1.15 4 50. 60. 1.15 50. 80. 1.15 • Question 8 Use the data to identify the limiting reagent for each reaction performed. V Trail 1 a. Neither/Both EV Trial 2 b. Baso4 EV Trial 3 C. KSO4 EV Trial 4 d. Ba(NO3)2 EV Trial 5 e. KNO3 Question Help: Message instructor I Calculator Submit Question • Question 9 Why is the amount of precipitate in the Data Table above the same in Trials 3 through 5? Edit Insert Formats B IVX x' Aarrow_forwardE MasteringChemistry: HW 01b C Get Homework Help With Che b My Questions | bartleby > MyLab and Mastering Home - Students x X A session.masteringchemistry.com/myct/itemView?offset=next&attemptNo=1&assignmentProblemlD=139293464 E Apps W California Fool's Go... CLA Purdue OWL: APA F.. O Christmas Window... C Bianca 4-piece Fabr.. O ANGELINO o How do I format m. O Choosing Resource. New Tab Dashboard >>arrow_forward: Student Home - tulsacc.edu Content * Tulsa Community College - CHE x A Chempendix - EM Spectrum + A saplinglearning.com/ibiscms/mod/flcn/view.php?id=14531813 Sapling Learning Homework Unit 4 Ser Keri Baugess ▼ macmillan learning Sapling Learning > Tulsa Community College - CHEM 1315- Fall20 - BROSSSETT > Activities and Due Dates > Homework Unit 4 Section 1 = 7 of 25 Questions Assignment Score: Give Up? У Hint 35.2% Resources Check Answer O1 Question Question 7 of 25 > 100% 1 of o Attempts Correct A certain shade of blue has a frequency of 7.12 × 1014 Hz. What is the energy E of exactly one photon of this light? Planck's constant h = 6.626 x 10-34 J.s. 2 Question 1 of o Attempts 0% In Progress O 3 Question 91.7% E = J 5 of o Attempts Correct O 4 Question 100% 1 of o Attempts Correct O 5 Question 100% 1 of oo Attempts Correct O6 Question 100% 1 of oo Attempts Correct 7 Question 0% O of oo Attempts O8 Question 2 of o Attempts 95% Correct 9 Question O of o Attempts 0% © 2011-2020 Sapling…arrow_forwardMISSED THIS? Watch IWE: Half-Reaction Method of Balancing Aqueous Redox Equations in Acidic Solution ; Read Section 20.2. You can click on the Review link to access the section in your e Text. Balance each of the following redox reactions occurring in acidic aqueous solution. K(s) + Cr³+ (aq) → Cr(s) + K+ (aq) Express your answer as a chemical equation including phases. ► View Available Hint(s) Submit ΑΣΦ A chemical reaction does not occur for this question. Part B ? Al(s) + Fe²+ (aq) → A1³+ (aq) + Fe(s) Express your answer as a chemical equation including phases.arrow_forwardE Home Page Bb Sapling Learning Access - Fall 20 x e Wharton County Junior College b My Questions | bartleby + A saplinglearning.com/ibiscms/mod/flcn/view.php?id%3D12649763 Sapling Learning Ch 7 HW Hanan Hassan - macmillan learning Sapling Learning > Wharton County Junior College - CHEM 1405 - Fall20 - ZHAO > Activities and Due Dates > Ch 7 HW E 8 of 28 Questions O Assignment Score: O Resources C Give Up? O Hint Check Answer 25.7% O of o Attempts Question 8 of 28 > 5 Question 0% O of o Attempts Suppose you have two samples that are equal in weight, 26.8 g Ni and 26.8 g Cr,Oą. O6 Question 95% Calculate the number of moles of each substance. 2 of o Attempts Correct O7 Question 100% 1 of o Attempts Correct 26.8 g Ni = mol 8 Question 0% O of o Attempts 26.8 g Cr,O, = mol 9 Question 0% O of oo Attempts 10 Question 0% © 2011-2020 Sapling Learning, Inc. about us privacy policy terms of use contact us help careers 1:28 AM P Type here to search 10/9/2020 8 近arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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