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WILFRID LAURIER UNIVERSITY CH110 ASSIGNMENT 1 –
To Excel in Chemistry NAME: Fauzia Ali Hassan STUDENT NUMBER: 169-068-519 DATE SUBMITTED: 24 01,2024 Click here to enter a date. LAB SECTION: L6 Instructions
: Fill in the blanks and submit all sheets and required graphs/tables in ONE document only to be uploaded (no .pages or .heic files) to your online CH110 Lab MyLS Excel Assignment dropbox. No other lab report criteria are required for this assignment. Part 1: Simple Linear Plot •
Which set of data is plotted on the y
-axis? Volume of one mole of helium (L) the x
-axis? Temperature (K) •
Record the following information: The equation of the fitted trendline y=0.1026x -6.8464
The value of the slope of this line 0.1026 The value of the y
-intercept of this line 6.08464 •
Is the fit of the trendline to your data a good fit? (Yes or No) Yes Briefly explain your response: As my R^2 is close to 1 then it will be considered to a good fit for my data. Another reason is my data has a liner line and no a sctherefore it indicts that it a good fit. •
Determine the temperature, in Kelvin, of the gas in the cold room when it has a measured volume of 10.5 L using: a)
Extrapolating by graphical means 169 K b)
Extrapolating by using the equation of the trendline 6.36K Show your calculations for b) below: y=0.1026x-6.8464 10.5 L= 0.1026x-6.8464 10.5 L = -6.7438x Answer= -1.56 •
Include (copy and paste) your graph in this report. Be sure that your axes are properly labeled,
© Laurier Department of Chemistry and Biochemistry. No permissions for wider dissemination
.
with units, the equation of the line and the R
2
value are visible, and that your graph has an approprite title. Click here to enter text. Part 2: Using Functions •
For the Time of Diffusion versus Temperature plot, why is time plotted on the y
-axis? Since all the variables are held constant, diffusion time is shown on the y axis and since the temperature is a dependent variable as it can change at anytime. •
For the Time of Diffusion versus Temperature plot, which set of data is placed on the left in the Excel worksheet? Time of diffusion is placed on the left in the excel worksheet. •
What are the R
2
values for the four graphs? Fill-in the table below. Time vs. Temperature Time vs. ln(Temp) Time vs. (Temp)
0.5
Time vs. (Temp)
−
0.5
R
2
0.913 0.995 0.965 0.9977 •
Which plot of the four graphs produces the most linear relationship? How do you know? I believe the 4st graph has the most liner because it close to 1 more than the other graphs record. •
Record the following information: The equation of the trendline for the most linear plot y=107.94x + 1.008 The value of the slope of this line 107.94 y = 0.1026x - 6.8464
R² = 0.987
y = 0.1026x - 6.8464
R² = 0.987
0
5
10
15
20
25
30
35
150
200
250
300
350
400
Volume Of One Mole Of Helium (L)
Tempeture (K) Tempeture (K) Verses Volume Of One Of Helium (L)
© Laurier Department of Chemistry and Biochemistry. No permissions for wider dissemination
.
•
Include your graphs in this report. Be sure that your axes are properly labeled, with units, the equation of the line and the R
2
value are visible, and that your graph has an appropriate title. y = 107.94x + 1.008
R² = 0.9977
0.0000
2.0000
4.0000
6.0000
8.0000
10.0000
12.0000
0.0000 0.0100 0.0200 0.0300 0.0400 0.0500 0.0600 0.0700 0.0800 0.0900
Time Of Diffusion (ms) Temperature Dependent Inverse Square Root Temperature - Dependent Inverse Square Root Diffusion Trend Chart y = -0.0076x + 10.045
R² = 0.9134
0
2
4
6
8
10
12
Time Of Diffusion (ms) Temperature (K) Thermal Diffusion: Temperature (K) Verses Time Of Diffusion ( ms) trend chart.
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Fe(s) + 2HCI(aq)→→→FeCl₂(s) + H₂(g)
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Suspect #1: George Norman
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George Norman recently
Becky Baker is a world famous
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Suspect # 3: Liz Lemon
Suspect #4: Ben Linus
Liz Lemon just had her nails
Ben Linus had been walking
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traces of nail polish remover
on her hands. Nail
around in the rain
for about an hour
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polish remover
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The formula for
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was dripping wet with water
acetone is C3H60.
renover
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Calculating molarity using solute moles
A chemist prepares a solution of aluminum chloride (AIC1,) by measuring out 46. µmol of aluminum chloride into a 200. mL volumetric flask and filling the
flask to the mark with water.
Calculate the concentration in mmol/L of the chemist's aluminum chloride solution. Be sure your answer has the correct number of significant digits.
mmol
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Explanation
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the questions.
Acid
Ka
HF
6.7 x 10 4
НС-Н3О2
1.8 x 10-5
[H+][A-]
a. Using the expression Ka=
explain how to determine which solution has the lower pH, 0.10 M HF(aq)
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14T
13+
12+
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Determine the freezing point of an aqueous solution that is 0.584 m sucrose.
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MG 6380. JPG
IMG 30
Write the products of the following acid-base reaction.
внз + CH3OCH3
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You should include all products
If the reaction is a Brønsted acid-base reaction, draw the products in separate sketchers
If the reaction is a Lewis acid-base reaction, draw the products in a single sketcher, with a single bond connecting the Lewis base and Lewis
Separate multiple products using the + sign from the drop-down menu.
o
acid.
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Solving moles-to-moles limiting reactant problems
Nitrogen dioxide (NO2) gas and liquid water (H,O)
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NO, and 5.0 mol of H,O in a reactor.
Calculate the largest amount of HNO, that could be produced. Round your answer to the nearest 0.1 mol.
| mol
Explanation
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MODEL#3: Understanding How SFs Propagate in Calculations.
C. 4.0000 cm²
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C. 3800. g
f. 1.70×104 g/cm³
a. Calculate the volume (length x width x height) in units of mm³ (mm × mm x mm) for the
large eraser shown below. Report your answer to as many digits as your calculator displays.
254.7 mm
fufc
25.3 mm
Jef
b. Estimated uncertainties in measurements are at least ±1 value in last reported digit.
Estimate the new volume if each of the above measurements were 0.1 mm larger (136.9 mm
x 254.8 mm x 25.4 mm).
2
c. Starting from the left, which digit is the 1st digit in the answers from a & b that differ? If you
report all the values that agree plus the 1st value where the answers disagree, how many SFs
should you report?
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O SIMPLE REACTIONS
Identifying precipitation, combustion and acid-base reactions
Classify each chemical reaction:
type of reaction
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reaction
O precipitation
O combustion
O combination
кон (аq) + нсIо, (аq) - ксіо, (аg) + н, о()
O single replacement
O double replacement
O acid-base
decomposition
O combination
O precipitation
O single replacement
O double replacement
O decomposition
O combustion
Feso, (aq) + PbCL, (aq) →
FeCl, (aq) + PbSO,(s)
O acid-base
O combination
O precipitation
2K (s) + Br, (1) → 2K Br(s)
O single replacement
O combustion
double replacement
O acid-base
O decomposition
O combination
O precipitation
Baco, (s)
Ba0(s) + Co, (g)
O single replacement
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O double replacement
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> Life Science-1803035-377210-15 / Unit 7: Chemical Reactions/ Week 23 - Chemical Reactions/ Monday, Lesson 107 - 2/8/21
Identifying the Parts of a Chemical Reaction. Identify the reactants and
products in the chemical reaction below.
Identify the reactants: CH4 + 202 --> CO2 + 2H2O
Your answer
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Identify the products: CH4 - 202 --> CO2 + 2H2O
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Identify the reactants: NaCi Na CI
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WHAT ARE REACTIONS?- READ IT
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As you work on the questions, have your lab manual and text book handy.
If you have questions go to one of the office hours and remember, do not leave it for the last
minute!
In the titration of 25.00 mL of a water sample, it took 19.090 mL of 3.165x 10-3 M EDTA solution to reach the
endpoint.
Calculate the number of moles of EDTA required to titrate the water sample. (enter your answer with 3 significant
figures)
6.04x10-5
You are correct.
Your receipt no. is 151-9969 ?
Previous Tries
The total hardness is due to one or a combination of Ca2+, Mg2+, and Fe2+ in your sample. It is convenient to express
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ethod? 7...
F2
Remaining Time: 1 hour, 22 minutes, 23 seconds.
Question Completion Status:
A Moving to the next question prevents changes to this answer.
Question 1
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The angle of the water molecule (H₂O) is
180 degrees
120 degrees
100 degrees
90 degrees
109 degree
A Moving to the next question prevents changes to this answer.
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$
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Case #5
Case #6
Jeepers! Someone snuck into
the Movie Madness studio and
Someone stole the net from the
High Wire act at the Crazy Circus!
Without it, the show can't go on!
stole the reels for the new film!
The CSI team found a liquid at
At this crime scene, there were
traces of a liquid, 9 drops (at ,059
drop) were found to contain
279C, 119790, and ,06039H, What
was the empirical formula of the
compound? Who committed the
heinous act?
this crime scene, When the
,77009 sample was analyzed, it
was found to contain ,04679H
and ,724390, What was the
empirical formula? Who should
the police question?
a
Case #7
Case #8
Old Man Higgins had his
favorite cane taken from him
when he was out for a walk
through Sinister Park, The CSI
team found traces of a uhite
powder at this crime scene, To
be 61,67%CL, A flame test
yielded a yellow flame,
indicating the remaining
portion was sodium, What was
the empirical formula of the
compound? What kind of
person would steal an antique
cane?
The original…
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HDPE and PS are both inert to bases and acids, which plastic would you rather chose to put 1 Liter of 6M HCl for general chemistry lab? Explain why.
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Data Collection
Kinetic Data Collection
Time, t (s)
Volume of added base (mL)
First addition
40
0.50
Second addition
101
1.00
Third addition
160
1.52
Fourth addition
224
1.99
Fifth addition
278
2.49
Sixth addition
334
3.01
Seventh additlon
389
3.48
Calculations
Concentration of NaOH stock solution:
0.01 M
Concentration of t-BuCl stock solution:
0.2 M
Volume of t-BuCl solution:
10 mL stock stock solution added to 25 mL acetone
Table view
List view
Kinetic Data
Volume of
Moles of Amount of
t-Bucl
(mol)
[-Buc]
In[-BuC
Time, t (s) added base added base
(mL)
(mol)
First
addition
40
0.50
Second
additlon
101
1.00
Third
addition
160
1.52
Fourth
addition
224
1.99
Flfth
additlon
278
2.49
Sixth
additlon
334
3.01
Seventh
addition
389
3.48
Use the data in the table above to plot In[t-BuC]]; vs time (s). Include labelled axis, a title, and a
linear trendline. Upload your plot here.
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Can someone please help
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Pre-Lab Questions
1. Define a protein, and describe one important function of proteins in the human body.
2. The following data were obtained from a Bradford assay to determine the protein content in a
sample:
Protein content (ug)
Absorbance value
0
0.000
2
0.022
5
0.065
10
0.106
20
0.178
30
0.299
40
0.380
50
0.472
unknown
0.150
Use Excel, another program, or graph paper to produce a calibration curve based on the data.
Use linear regression (or best fit line) to obtain the slope of the line.
Determine the unknown protein content for a sample that shows an absorbance reading of
b.
С.
0.150.
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Question 2
Answer the questions in the table below about the shape of the sulfur hexabromide (SBr) molecule.
How many electron groups are around the central sulfur atom?
Note: one "electron group" means one lone pair, one single bond,
one double bond, or one triple bond.
What phrase best describes the arrangement of these electron
groups around the central sulfur atom?
(You may need to use the scrollbar to see all the choices.)
(choose one)
I Don't Know
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PDF
File | C:/Users/Afiqah/Documents/SK0024/TUTORIAL%205.pdf
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+
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Draw
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1. Based on the poster below:
THE CHEMISTRY OF INSECT REPELLENTS
COMMON COMPOUNDS IN INSECT REPELLENTS
HOW DO REPELLENTS WORK?
UPLEASANT DOR
DEET
NN-DIETHYL-M-TOLUAMIDE
ICARIDIN
A.K.A PICARIDIN
BND TO DLACRYECEPS
PRODUCE REPELLENTEECT
Recent studies sggest that, aer intaly
to its repelent effect This could have
future implicaions for how the efficacy of
repelents is deteined
Most comman active ingredien
Odourless et damage platies
28hours proection 20o soktion
24 hours pronection (20% solution
( t but cn caute mild
Efective ye mesuos, ticks, fieas
biting feas& chiggers
A BUILT IN DEFENCE?
1-METHYLPIPERAZINE
Effective v mosquitos, ticks fieas
WHAT ATTRACTS INSECTS?
1-0CTEN-3-OL
CH
CITRIODIOL
P-MENTHANE-3,8-DIOL
IR3535
ETHYL 3TACETYLBUTYLAMINOI
PROPANOATE
HN,
This chemical is contained in
human sweat and breath, and is
thought to attract biting insects…
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Please draw how Owl, an online chemistry program would accept.
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Simplify. Write each answer in scie
17) (5.4x 10")는 (7X/0")
19) (6 x 10°(4 x 10-1)
21) (7.68 x 10:)는 (9x/0°)
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- Watch the following video (https://fod.infobase.com/OnDemandEmbed.aspx?lti=1&token=166850&wID=97629&loid=0&w=400&h=300) then answer the following questions about the following video. A) Explain in one paragraph why, in your opinion, forensic anthropology and bioarchaeology employ race or ethnicity according with the film. B) Please respond to the following question in one paragraph: When NOVA reconstructs the history of human migration from Africa, it is presenting an antiquated theory of how people arrived in the Americas. Which model did they put forth? What is the most recent theory and evidence? Reference your work.arrow_forwardMRI machines primarily work using ____.a. The nuclei of carbons in fatty acid chainsb. The nuclei of oxygen atoms from water molecules in the bodyc. The nuclei of hydrogen atoms from water molecules in the bodyd. The nuclei of radioactive isotopes injected into the bodyarrow_forwardu.instructure.com/courses/94346/quizzes/1427742/history?quiz_submission_id%3D14363666 Unanswered Question 44 /1 pts N. ČH3 Identify the name. Type your answer in all CAPITAL LETTERS. NOTE: Be careful with your use of punctuation. You Answeredarrow_forward
- M Apple Google Disney ESPN Yahoo! Biomedical Careers Program Apple iCloud Yahoo Images Bing Google Wikipedia COWLv2 |... b D2L ☆ & G For the reaction r r Submit Answer prod03-cnow-owl.cengagenow.com Fe(s) + 2HCI(aq)→→→FeCl₂(s) + H₂(g) AH° = -7.4 kJ and AS° = 107.9 J/K D2L D2L D2L Facebook Twitter LinkedIn Use the References to access important values if needed for this question. The Weather Channel Yelp TripAdvisor b D2L M G C The maximum amount of work that could be done when 2.08 moles of Fe(s) react at 286 K, 1 atm is Assume that AH° and ASº are independent of temperature. Retry Entire Group 4 more group attempts remaining kj. +88 Marrow_forwardView History Bookmarks Profiles Tab Window Help me File Edit dt8827@uncw.edu X a Dashboard A ALEKS - David Teac X A ALEKS - Reyna N Watch Gilmore Girls x A www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IvdWKW_BBZZI6tTytly4Fcfu6zOtOf8oMM9svvsLWWbn4 O Spotify Web Playe.. M Common Ethical D.. O ATOMS, IONS AND MOLECULES Predicting the formula of ionic compounds with common... Write the empirical formula for at least four ionic compounds that could be formed from the following ions: CH;CO,, MnO, NH, Pb** Explanation Check © 2022 McGraw APR 18arrow_forwardSuspect #1: George Norman Suspect #2: Becky Baker George Norman recently Becky Baker is a world famous chef. She had just finished baking a cake at the time of the crime. The recipe called for baking soda. The formula for baking soda (sodium bicarbonate) is had an accident where he cut himself with a Alaia knife. He cleaned the wound with rubbing alcohol. The formula for rubbing alcohol Bak ing Seda NaHCOз. (isopropanol) is C3H80. Suspect # 3: Liz Lemon Suspect #4: Ben Linus Liz Lemon just had her nails Ben Linus had been walking done, and she still has traces of nail polish remover on her hands. Nail around in the rain for about an hour before the crime polish remover he was suspected contains acetone. Acetone of occurred. He The formula for Polish was dripping wet with water acetone is C3H60. renover at the time. The formula for water is H2o.arrow_forward
- ome File Edit View History Bookmarks Profiles Tab Window Help Watch Gilmore Girls x * Dementia Friend C X Yahoo A ALEKS A ALEKS - David Teac x Psychology Resea Lobby Top Hat A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNsIkr7j8P3jH-IvdWKW_BBZZI6tTytly4Fcfu6zOtOf8oMM9sjOAHGPMmOKRAJLU3LxjedwmoV-. O ☆ O Spotify Web Playe. M Common Ethical D.. O CHEMICAL REACTIONS 0/3 D Calculating molarity using solute moles A chemist prepares a solution of aluminum chloride (AIC1,) by measuring out 46. µmol of aluminum chloride into a 200. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's aluminum chloride solution. Be sure your answer has the correct number of significant digits. mmol L Explanation Check 202? McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy IIarrow_forwardnin x UNIT_8_PROGRESS_CHECK (Protected View) - Word (Unlicensed Product) Mailings Review View Help Tell me what you want to do ontain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing Office product is inactive. To use for free, sign in and use the Web version. Activate Use free at Office.com the questions. Acid Ka HF 6.7 x 10 4 НС-Н3О2 1.8 x 10-5 [H+][A-] a. Using the expression Ka= explain how to determine which solution has the lower pH, 0.10 M HF(aq) [HA] or 0.10 MHC,H3O2(aq). Do not perform any numerical calculations. b. Which solution has a higher percent ionization of the acid, a 0.10 M solution of HC,H;O2(ag) or a 0.010 M solution of HC,H;O2(aq)? Justify your answer including the calculation of percent ionization for each solution. 14T 13+ 12+ 11+ 10+ 9+ 8- 6- 5+ 4- hparrow_forwardter 9- CHEM A054 520 2 x Question 12 - Chapter 9 part 2 X с Chapter 9 part 2 Homework i 12 1 points ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%25 8 01:46:13 eBook Hint Print References Mc Graw Hill CH6_Chem103 - Kenai Peninsu X + °C Determine the freezing point of an aqueous solution that is 0.584 m sucrose. Saved DUarrow_forward
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