Research Project Team Proposal v5
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Chemical Thinking Research Project Team
Proposal
v5.0 | CHEM 151 RPTP v5.0
10-17-23 1 Research Project Team Proposal
Your name: Your email: Names of your team members: Names of your team members: Names of your team members: Your lab instructor’s name: Your lab section: Exploration Part 1
Exploration of Contaminant Removal from the Assigned UNKNOWN
Fragments (3 pts)
. Table 1.
Assigned
UNKNOWN Contaminant Removal and Contaminant Free Fragment Collection Trial Mass of Assigned
UNKNOWN
Ethanol Volumes (multiple columns are provided for trials run with multiple small extractions) Description of Sieving Method and the Results When Implemented Mass of Dried C
ontaminant Free UNKNOWN
Fragments 1 0.249g 2 ml 2ml Sieving method used was Hersch funnel, results showed that the contaminant removal was success
ful
as the mass changed drastically 0.209 g 2 0.253 g 1.5 ml 1.5 ml Sieving method used was Hersch funnel, the before and after change wasn’t as large, not necessarily meaning it was less successful, but vial two had much less of the dust powder in it. 0.222 g 3 0.254 g 2.5 ml 1 ml Sieving method used was Hersch funnel, the most change of all three trials possibly due to the same problem in trial 2 0.177 g Notes: To avoid using the forceps we dumped the plastic into a new vial by taking off the top part of the funnel and dumping the plastic left on the top. The trials appeared successful isolating the plastic from the contaminants, but All work must be
very neat
and
organized
. If you need to collect your thoughts, please use a separate sheet of paper. This Proposal is a
team effort
.
Submit the completed document
as a PDF
to the
Research Project Team Proposal
D2L DropBox before the scheduled end of lab.
Always check to
confirm the correct document/file has imported to the correct lab D2L Dropbox folder
–
no excuses.
Submission to an incorrect Dropbox folder will
be subject to a 1-point penalty.
If you submit an unintended document, or need to update a submission, you can always resubmit so long as you are
not past the deadline
. If you submit the wrong document and fail to realize this until after the deadline, a resubmission cannot be accepted. So please
be careful and always double check!
The
assigned UNKNOWN
mixture is composed of various plastic fragments with lipid, protein, starch, and sand (sand serves as a
surrogate for
“
dirt
”
).
There are two major manipulations to optimize
:
•
First, the removal of contaminants using
ethanol
.
•
Second,
sieving
to collect the contaminant-free plastic fragments.
Using
three (3) separate 0.5 g samples of your
assigned UNKNOWN
find the
minimum volume
(1 - 10 mL) of
ethanol
needed to
remove all the contaminants. (Don
’
t forget, the total consumption of
assigned UNKNOWN
must not exceed 1.5 grams for the entire
Exploration
.) Your team must decide on the
ethanol volume increments
to test and exactly how you will identify the
minimum
volume of ethanol
required. Remember, two small extractions are more efficient than one large extraction. Your team must also
determine how best to accomplish the
sieving
to collect the plastic fragments free of contaminants. That is, each of the three separate
extractions (contaminant removals) must feature an accompanying sieving to capture the cleaned plastic fragments in bulk. You must
not employ forceps (tweezers) to collect the plastic fragments in this
Exploration
.
Use of forceps for this exploration/development
will result in point deductions.
Complete
Table 1
below and record notes in the space below the table.
Chemical Thinking Research Project Team
Proposal
v5.0 | CHEM 151 RPTP v5.0
10-17-23 2 the results may still result in an uncertainty of the amount of ethanol to use because of the problems concerning the different amounts of dust or contaminant in each trial. Percent Contaminant Removal (3 pts)
. Calculate the percent contaminant removal
for each
of the above three trials using the appropriate Table 1
values. Present all three calculations in a well-organized manner and in complete detail
. Percent Contaminant removal = (Mass of contaminants removed/ Mass of UKNOWN sample) * 100% Percent Contaminant removal (Trial 1) = 0.04 g / 0.249 g *100% = 16.06% Percent Contaminant removal (Trial 2) = 0.031 g / 0.253 g * 100% = 12.25% Percent Contaminant removal (Trial 3) = 0.077 g / 0.254 g * 100% = 30.31% Exploration Part 2
Exploration of KNOWN
PETE, HDPE, PP and PS Fragments Density Behavior (3 pts)
. NanoPure Water
Ethanol
5M NaCL
PETE
Sank after was pushed below the surface
Sank Immediately without any manipulation
Sank slowly without any manipulation
HDPE
Floats after popping air bubbles shaking vile and attempting to push the plastic below the surface
Sank Immediately without any manipulation
Floats after popping air bubbles shaking vile and attempting to push the plastic below the surface
PP
Floats after popping air bubbles shaking vile and attempting to push the plastic below the surface
Sank Immediately without any manipulation
Floats after popping air bubbles shaking vile and attempting to push the plastic below the surface
PS
Floats after popping air bubbles shaking vile and attempting to push the plastic below the surface
Sank Immediately without any manipulation
Floats after popping air bubbles shaking vile and attempting to push the plastic below the surface
In a complete, well-prepared table or tables, carefully organize and clearly summarize the results of your systematic testing of the
KNOWN
PETE, HDPE, PP
and
PS
fragment density behavior (float or sink) in
5 M NaCl
,
NANOpure water
and
ethanol
. Air
pockets/bubbles must be dislodged from the fragments, and other manipulations may prove necessary. Present these
manipulations in a highly organized fashion with clarity and detail such that the manipulations can be understood by a reader with
some laboratory experience, but lacking familiarity with the Project.
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CHEMISTRY BENCHMARK TEST 01
CHEMISTRY I 12-7 (AARON JAMES, ID: 12390724)
A student dissolved 15 grams of pure acetic acid (CH,COOH) in enough water to make 100. milliliters of solution. Given the atomic masses
provided on the periodic table, what is the molarity (M) of the acetic acid solution?
a 0.025 molar
D0.40 molar
© 2.5 molar
O 4 molar
A
B B
1 2
4
5 6 7 8 9 10
3.
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Based on the data in the table, summarize what was shown here, what did they do here? And was this lab successful or not?
Substance
Physical Appearance
Odor
Density (g/mL)
Reacts with NaHCO3
1. Benzaldehyde
Clear liquid or almost pale yellow
It smelled like almonds
1.00
No, significant reaction
2. MTBE
Colorless
Fruity smell to it
1.236 -1.247
No chemical reaction occurred
3. Urea
White solid
A very strong order of ammonia
0.791
No reaction occurred
4. Acetone
Colorless
Pungent odor like nail polish remover
1.335
No, did not react with sodium bicarbonate
5. Glycerol
Colorless
N/O
1.044
No, it did not cause a reaction
6. Citric Acid
colorless then turns white with sodium bicarbonate added
N/O
1.044
Yes, caused fizzy/bubbles to it.
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urses/55527/quizzes/401369/take
→
#
3
Complete the data table using the calculation process you used to complete
the previous question.
Be sure to keep a copy of the completed table to include in the lab report for
this experiment.
$
Trial
1
Trial
2
Trial
3
Trial
4
Trial
5
4
1.00 M Acetic Acid
volume
HC₂H3O2
25.0 mL
25.0 mL
25.0 mL
25.0 mL
25.0 mL
Q Search
f5
%
moles
5
f6
Mole
Ratio
6
HC₂H3O2
: NaHCO3
3:1
2:1
*All values should contain three (3) significant digits.
1:1
1:2
1:3
U
hp
NaHCO3
Molar Mass: 84.007 g/mol
moles
fg
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99+
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1. Calculate the mass percent of water for the hydrate, LINO,-3H;O.
2. What will be the probable effect if you kept the crucible completely covered during the entire
heating and cooling processes? Would your calculated percent water in the hydrate be high, low, or
unaffected? Explain.
3. If 2.752 g sample of Ca(NO:); XH;O is heated to constant mass, the residue weighs 1.941 g.
Determine the value of x and the formula of the hydrate.
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Question 5 of 8
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compound:
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This assignment is designed to help you learn how to
determine total costs by combining direct and indirect
costs for a particular department.
In this GHA, you will be determining the total costs for
three departments: (1) Physical Therapy (2)
Occupational Therapy and (3) Speech Therapy.
To determine the total costs, you will need to add the
direct costs to the indirect costs using the template
provided below.
Please use the example provided in the assignment
description if you find that you need some support
understanding the required calculations.
DIRECT COSTS
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identifiable, because they are the costs that are directly
attributable to the department.
The direct costs are as follows:
Physical Therapy (PT)
Occupational Therapy (OT)
Speech Therapy (ST)
Total Direct Costs
INDIRECT COSTS
The indirect costs will need to be allocated to Physical
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Suspect #1: George Norman
Suspect #2: Becky Baker
George Norman recently
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chef. She had just finished
baking a cake at the time of
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for baking soda. The formula
for baking soda
(sodium
bicarbonate) is
had an accident
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Alaia
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The formula for
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(isopropanol) is C3H80.
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Suspect #4: Ben Linus
Liz Lemon just had her nails
Ben Linus had been walking
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on her hands. Nail
around in the rain
for about an hour
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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
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Remaining Time: 1 hour, 22 minutes, 23 seconds.
Question Completion Status:
A Moving to the next question prevents changes to this answer.
Question 1
#
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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3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solution is water. In a hardware store, you can buy industria
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Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume o
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Volcano # 1
Volume of gas produced (mL.) vs. Time (s) for Volcano #1
Time
Volume of gas
(s)
produced (ml)
60
E 50
10
20
30
25
8 40
38
46
30
20
Volume of gas
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40
50
50
60
52
of
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%3D
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tion 12 - Chapter 10 Home X
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NH4NO3 → (Click to select) N20 +
Balance the chemical equation. Note that you must select "1" if that is the correct coefficient, though the "1" is not typically written in a
balanced equation, but is implied.
(Click to select) NH4NO3
5
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JUL 11
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W Ideas of caring in nursing practice
W Ideas of caring in nursing practice - Karlsson - 2020-
Chapter 6 HW-General, Organic, and Biological Ch
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Complete the reaction. Add hydrogen atoms to the appropriate atoms.
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Hypothesis
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Temp (degrees Trial!
4
5.85
3.06
10
22
Ho
Results
Time to float disc
65t
4.00
1/29/24 Mini Lab #1
10.49
9.43
Trial a
5.70
2.86
5.26
7.86
11.36
Average
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4.63
9.175
10.395
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Key Words: global warming
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1. Why is oxygen NOT a greenhouse gas?
A
4
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greenhouse gas
6
infrared energy
3. The atmosphere on the planet Venus is almost 96 % carbon dioxide. What effect might its
concentration of carbon dioxide have on the average surface temperature on Venus?
is not a greenhouse gas because it is transparent to infrared light. and greenhouse gasses absorb
oxygen
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greenhouse?
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3
7
I
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You continue with the Arrhenius Plot with the slope of the curve to be
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Did your coworker achieve a century shelf life in either storage
condition? Be sure to show your calculations.
Arrhenius Plot
In (k)
-8
-10
-12
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Lab Data / Calculations
Identity of Unknown
Mass (g) of Unknown and weighing paper
Mass (g) of weighing paper following transfer
Mass (g) of Unknown A used
Initial mass (g) of Mg used (approximate)
Mass (g) of filter paper (before use)
Mass (g) of dried filter paper and isolated Cu
Show Transcribed Text
Initial mass (g) of Mg used (approximate)
Mass (g) of filter paper (before use)
Mass (g) of dried filter paper and isolated Cu
Mass (g) of recovered Cu metal
%by weight of Cu in Unknown A
A
Edit Answer
3,35
Edit
2.25
Edit
Try 1: X 1.0972
Try 2:11
55
Info 1040
0.48
Edit
0.32
Edit
0.42
Edit
0.48
Edit
0.32
Edit
0.42
Edit
Try 1:01
55
Info 1080
Try 1: X 20.83
Try 2:9.091
5 5
Info 1090
PD
NG 3
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12. Polychlorinated biphenyls (PCBS)
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in electrical apparatus. They are now
considered to be persistent organic
pollutants *
Figure 1 shows an example of PCB: 2,2',4,4-tetrachlorobiphenyl(PCB-47).
CI
CI
Cl
CI
Figure 1
What is the m/z value of the most abundant molecular ion peak in a mass spectrum of PCB-47?
[Chlorine exists as two isotopes, "Cl and "CI ; relative atomic mass C,12.0; H,1.0; CL
35.5]
A. 290
В. 292
С. 294
D. 298
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Fe(s) + 2HCI(aq)→→→FeCl₂(s) + H₂(g)
AH° = -7.4 kJ and AS° = 107.9 J/K
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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
M
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1015MSC Chemistry of Biological Systems II 2020
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box 1 answer choices: trial 1, trial 2, or trial 3.
box 2 answer choices: trial 1, trial 2, or trial 3.
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concentration is 100 µg/m³.
O A. 40
О В. 50
О С. 60
O D. 70
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Please help
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Please don't copy I am completing an online lab so I will try to provide the needed information to solve. Please let me know if any information is missing.
We started with 20 mL 1 M acetic acid ~ 0.020 L acetic acid in a flask.
(Ka acetic acid = 1.8x10^-5; pKa = 4.7) (Kb ammonia = 1.8x10^-5; pKb = 4.7; Ka = 5.56x10^-10; pKa = 9.25)
We titrated with 1 M Ammonia have to calculate the pH mathematically at different amounts of Ammonia added. Our Ammonia amounts are 8 mL, 16 mL, 20 mL, and 22 mL.
We then have to find the percent difference of the online labs pH calculations.
Online Lab's Values:
8 mL Ammonia - pH of 4.58
16 mL Ammonia - pH of 5.36
20 mL Ammonia - pH of 6.99 (equivalence point in the lab)
22 mL Ammonia - pH of 8.24
I would greatly appreciate if you could show for all 4 of the amounts of Ammonia added, and show how you did them.
Thank you! Will gladly upvote if work is shown!
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Write the balanced equation for the neutralization of acid rain (assume HNO3 is dissolved in water) by limestone (calcium carbonate).
Express your answer as a chemical equation.
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What is the coefficient of H20 when the following equation is properly balanced with the smallest set of whole numbers?
Na +
_H20 → _ NaOH + _H2
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- Need complete solutions no need ai solutions okk just solve accuratearrow_forwardOnCourse Connect Assessment: Chemistry x Copy of spread_of_islar x = The Spread of Islam -G x M Inbox (904) - aarojame A Classes boncourseconnect.com/assessment/1651879/5287e2a3-0d0b-e2c0-c15c-3e68a37149b4 D TPSS Bookmarks CHEMISTRY BENCHMARK TEST 01 CHEMISTRY I 12-7 (AARON JAMES, ID: 12390724) A student dissolved 15 grams of pure acetic acid (CH,COOH) in enough water to make 100. milliliters of solution. Given the atomic masses provided on the periodic table, what is the molarity (M) of the acetic acid solution? a 0.025 molar D0.40 molar © 2.5 molar O 4 molar A B B 1 2 4 5 6 7 8 9 10 3. O Save/Exit 4 sn TESSarrow_forwardBased on the data in the table, summarize what was shown here, what did they do here? And was this lab successful or not? Substance Physical Appearance Odor Density (g/mL) Reacts with NaHCO3 1. Benzaldehyde Clear liquid or almost pale yellow It smelled like almonds 1.00 No, significant reaction 2. MTBE Colorless Fruity smell to it 1.236 -1.247 No chemical reaction occurred 3. Urea White solid A very strong order of ammonia 0.791 No reaction occurred 4. Acetone Colorless Pungent odor like nail polish remover 1.335 No, did not react with sodium bicarbonate 5. Glycerol Colorless N/O 1.044 No, it did not cause a reaction 6. Citric Acid colorless then turns white with sodium bicarbonate added N/O 1.044 Yes, caused fizzy/bubbles to it.arrow_forward
- urses/55527/quizzes/401369/take → # 3 Complete the data table using the calculation process you used to complete the previous question. Be sure to keep a copy of the completed table to include in the lab report for this experiment. $ Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 4 1.00 M Acetic Acid volume HC₂H3O2 25.0 mL 25.0 mL 25.0 mL 25.0 mL 25.0 mL Q Search f5 % moles 5 f6 Mole Ratio 6 HC₂H3O2 : NaHCO3 3:1 2:1 *All values should contain three (3) significant digits. 1:1 1:2 1:3 U hp NaHCO3 Molar Mass: 84.007 g/mol moles fg * 99+ 8 a fg mass needed DO 9 f10 ► 11arrow_forwardExperiment 605_Hydrates_1_2_1 (1) (Protected View) - Word (Unlicensed Product) ces Mailings Review View Help Foxit PDF Tell me what you want to do contain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing ir Office product is inactive. To use for free, sign in and use the Web version. Post-lab Questions Activate Use free at Office.cc 1. Calculate the mass percent of water for the hydrate, LINO,-3H;O. 2. What will be the probable effect if you kept the crucible completely covered during the entire heating and cooling processes? Would your calculated percent water in the hydrate be high, low, or unaffected? Explain. 3. If 2.752 g sample of Ca(NO:); XH;O is heated to constant mass, the residue weighs 1.941 g. Determine the value of x and the formula of the hydrate.arrow_forwardNeed help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!arrow_forward
- Please answer fast i give you upvote.arrow_forwardFirefox File Edit View History Bookmarks Tools Window Help my.CSMD.edu I Module 12 HW Chi wr NWP Assessme X De Module 9 HW Cha W NWP Assessment I Module 11 HW Che w NWP Assessment O 8 https://education.wiley.com/was/ui/v2/assessment-player/index.html?launchld=b0085ec6-77d3-4053-89d4-c26a8188beb3- E Module 12 HW Chapter 21 - Selected Exercises Question 5 of 8 -/1 E Starting with diethyl malonate, and using any other reagents of your choice, show how you would prepare the following compound: Fill 1) ? 2) ? Que Multi EtO 3)? 4) ? 5) ? Choose from the following list of reagents: OEt HO. Ques Multipa Questi A B D Multistep CH3Br LIAIH4 LDA NaOEt / EtOH Viewing Multipart Question E G H. Molecular Dra NaOH EtBr MgBr, H,O H20, heat heat Question 7 Multipart Question 8 Multistep MacBook Air esc F2 F3 F4 FS F10 @ 23 $ % & 1 2 3 4 7 8 W E R Y tab A S D F caps lock C V shift alt coms control option commandarrow_forwardThis assignment is designed to help you learn how to determine total costs by combining direct and indirect costs for a particular department. In this GHA, you will be determining the total costs for three departments: (1) Physical Therapy (2) Occupational Therapy and (3) Speech Therapy. To determine the total costs, you will need to add the direct costs to the indirect costs using the template provided below. Please use the example provided in the assignment description if you find that you need some support understanding the required calculations. DIRECT COSTS The direct costs for each department are easily identifiable, because they are the costs that are directly attributable to the department. The direct costs are as follows: Physical Therapy (PT) Occupational Therapy (OT) Speech Therapy (ST) Total Direct Costs INDIRECT COSTS The indirect costs will need to be allocated to Physical Therapy (PT), Occupational Therapy (OT), and Speech Therapy (ST). The indirect costs in this…arrow_forward
- Suspect #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_forwardrsity o... ingsbo... kboard... ARED4 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 # 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. MAR 14 80 F3 SA $ 000 F4 tv % F5 NA MacBook Air 22 F6 ∞r F7 45.113arrow_forward3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solution is water. In a hardware store, you can buy industria strength vinegar, which is 30% concentration. This means that 30% of the vinegar is acetic acid, and the remaining 70% is water. Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume o vinegar. But one volcano uses 5% vinegar and the other volcano uses 30% vinegar. He measures the volume of gas production for the'first minute of each reaction, and he records the data below. Volcano # 1 Volume of gas produced (mL.) vs. Time (s) for Volcano #1 Time Volume of gas (s) produced (ml) 60 E 50 10 20 30 25 8 40 38 46 30 20 Volume of gas produced (ml) 40 50 50 60 52 of 10 53 20 40 60 80 Time (s) Volcano # 2 Volume of gas Volume of gas produced…arrow_forward
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