Exp 6 Discussion Questions - S2024
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Jun 14, 2024
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Experiment 6 Discussion Questions
Upload your completed discussion questions with your scanned “data & observations” for this experiment
STUDENT NAME: ________________________________ (
please type your name here)
By typing your name above:
I confirm that this report is based on my original work and that I did not work with
another student (past or present) when composing this report. Reports without a name will not be eligible for credit.
Question 1 (2 marks). Increasing the concentration of one of the starting materials helps drive the
equilibrium of a Fischer Esterification reaction towards the product side.
In
experiment 6,
glacial acetic acid
is added in a 2.5-fold excess because it is easier to remove during “work-up”.
In 2-3 sentences
, explain why excess acetic acid would be easier to remove than excess 1-pentanol using the
“work-up” steps (Part II Steps 5–7) outlined in this experiment.
Question 2 (2 marks).
Adding excessive drying agent can lead to a significant loss of your desired product. (a)
In 1 sentence
, explain the purpose of washing the organic layer with saturated NaCl
aq (brine)
during the
liquid-liquid extraction in Exp 6. (b)
In
1-2 sentences
, explain why adding too much drying agent causes significantly more product loss
in
Exp 6 than if too much was added during Exp 1 and/or Exp 3.
© UBC Chemistry. Do not copy, reproduce, or distribute. This question is part of an assessment that is to be completed individually and without any assistance.
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Related Questions
2. What measurements might you record regarding water samples to assist with the quantification
process? How might these measurements have error introduced?
3. Create a table of your observations made during the experiment. For example:
Sample 2
Sample 1
Initial
After shaking
Write a brief summary of any conclusion that were reached.
4.
With your group, write a sentence statement of the objective of the experiment and the
method that will be used.
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please answer
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FINAL Experiment 1- January 2021_-789644623 - Saved
Layout
Review
View
Table
A friend of yours went panning for gold last weekend and found a nugget
that appears to be gold. With your newfound scientific prowess, you set out
to determine if it is really gold. Your tests show that the nugget has a mass
of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to
8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend?
acer
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All one question
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Question 35
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View
History
Bookmarks
Develop
Window
Help
A east.cengagenow.com
[References)
1 pt
EXERCISE Unit Conversion
1 pt
Drag conversion units onto the boxes in the equation to make conversions. Some boxes can be left empty. Click on a
unit to remove it from its position.
1 pt
1 cm³ Cu
9 g Cu
9.5 x 1021 atoms Cu
1 g Cu
1 pt
1 kg
1000 g
1 cm
= 1 mL
1 pt
1 L
1000 cm3
1 pt
1 pt
520 L x
1 pt
1 pt
1 pt
A piece of copper has a volume 520 L. What is the mass of the sample, in units of grams?
In the boxes above, enter the correct setup that would be used to solve this problem.
1 pt
1 pt
Check
Next
(2 of 3)
1 pt
1 pt
Submit Answer
Try Another Version
2 item attempts remaining
1 pt
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Part D
Complete column 4 of the table, excluding the isotope symbol and the cells that are already filled.
4
Protons
Neutrons
Electrons
36
Mass no.
81
Express your answers as integers. Enter your answers in the order given in the table from top to bottom separat
?
P4, n4 =
Submit
Request Answer
M...
Sp..
ex...
Co.
В.
388
amazon
AC.
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omfg answer this
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Please help me complete question 1,2,and 3
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Please let me know which 2 answers are correct, an explanation including evidence
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Heavy metals are analyzed in the water of river Emajõgi.
Choose correct term to each description.
Calcium in the water
Water of the river (as it flows)
Water of the river taken to the laboratory
Water (as H₂0)
Lead in the water
Chromium in the water
Choose...
Choose...
Sample
Matrix
Analysis object
Analyte
Choose...
Choose...
Choose...
IN
211
TE
ET
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please write in the correct format as given
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5
please help! *urgent*
write as many accurate and relevant statements about the picture below. please write more than 5 correct descriptions/statements. please be as descriptive as possible.
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2 What methods are used to sep X
G In Part Il of experiment 5, a 1:1: X
+
u/ultra/courses/_393452_1/cl/outline
* Question Completion Status:
QUESTION 3
After you complete the second step, you will be left with a clear colorless liquid. What should be done to the liquid to finish the separation?
O Heat the mixture to evaporate the liquid
O Add a base to neutralize the solution.
O Nothing - you are done since you have a pure, clear, colorless substance
O Add the residue back to the solution and dry.
QUESTION 4
In Part II of experiment 5, a 1:1:1 mixture of sand, salt, and salicylic acid must be separated. Order the following steps necessary to
separate this mixture into three pure, dry solids.
Filter the liquid leaving a filtrate with just salt dissolved and a residue of sand.
v Add hot water to the residue obtained in two steps prior to this one.
Filter the liquid leaving a filtrate with just salicylic acid dissolved and a residue of salt and sand.
v Heat the filtrate obtained in two…
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In general,the color that we see is __to the color absorbed.
What words should be put in the blank?
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None
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Supply the missing information in the table. (Given in Blue). Answers in scientific notation should be in this sample format >>> 1.0 x 10-14
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Question 3 )
Could please explain. I've been watching videos, but none have been adding a whole new product...
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ter 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
DU
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Please answer questions 3 and 4 and show work please. Thank you
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modified true or false
NUMBERS 1-5 ONLY
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This is not graded, it’s for practice. Answer all of the questions.
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PL03
141 PM Sun Apr 17
24) Order: Potassium Chloride 75meq p.o. daily
Supply: potassium Chloride
15 meq per 10 mL
220 mL
Calculate the dosage in fl-oZ
Connect
CAPS
4 Ch
**
F12
Esc
F1
F3
F4
F5
F6
F7
F8
F11
23
$
%
&
3
4.
7
9
%3D
Q
W
Y
U
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Answer both questions
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Instructions You are required to produce a short lab report using the information given in the accompanying document, ‘Lab report assessment_student data’. This document introduces an experiment, and also provides a set of experimental data for this experiment. You are required to use this data to perform steps 8 and 9 of the procedure. This includes calculations of a particular value, and then comparison to the true value. Consider any experimental errors when comparing calculated values and true values. Your report should be between 300 and 500 words (including all table contents and titles of tables and graphs). Your lab report should consist of three sections only: • Experimental • Results and Discussion • Conclusion You do NOT need to include an introduction section. Your experimental section should be written in appropriate lab report format, (passive voice, 3 rd person, in paragraphs). Your results and discussion section should contain the data presented in table format, and…
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An 8 mL volumetric pipet is used to collect a sample from a 0.2015 M solution of
NaOH.
a. Estimate the uncertainties in volume and concentration.
b. Calculate the moles of NaOH in the sample.
c. Use error propagation to find the uncertainty in moles of NaOH.
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can someone help me with answer a pls!
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I need the answer for question 3
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口
A docs.google.com
Classroom | Google for Education
Alchemy Lesson 20 & 21 Worksheet
Andres Carrill
Andres Carrillo - Alchemy Lessons 20 & 21 Worksheet
Update Apple ID S
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available until you sig
File Edit View Insert Format Tools Add-ons Help
Last edit was 2 days ago
100%
Normal text
Arial
11
BIUA
E = E = EE E - E E X
1
2
3
4
.. 6 I 7 O 8 1 IC
5
AIV-20: Getting Connected (Writing lonic Compounds)
Part 1: Putting together lonic Compounds
lonic compound
Metal
Number of
cation
nonmetal
number of
anion
total
total charge = 0
valence
valence
number of
electrons
electrons
valence
electrons
NaF, sodium fluoride
Na
Na +
(+1)+(-1) = 0
F-
8.
MgO, magnesium oxide
Mg
02-
(+2) + (-2) = 0
MgCl2, magnesium
chloride
Mg
CI
7
16
(+2) + 2(-1) = 0
Ne, neon
Ne
8
BeF2, beryllium fluoride
Be
MgS, magnesium sulfide
CaCl,, calcium chloride
Na
Br
K
Se
Al
Al203, aluminum oxide
Al
Al
F
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Ab GL B
art 3 SHOW WORK
ond Shipp: Attempt 1
Hu/d21/Ims/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=5956136&isprv=&drc=0&qi=5726766&cfql=
Answer
units
▷ Add attachments to support your work
Question 4 (0.5 points)
SHOW YOUR WORK.
G
**N*-*OO
If 35.45 mL of 0.8121 M sodium carbonate solution reacts with excess lead (III)
nitrate solution to form aqueous sodium nitrate and solid lead (III) carbonate, how
many grams of lead (III) carbonate is formed?
On your paper with your name and date:
1. Go from ionic compound name to formula (review Chp 5 as much as needed)
2. Balance the equation (review Chp 7 if needed).
3. Do the calculation showing ALL units, just like I did in solution stoichiometry
lecture.
a #
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Could someone Please Help with these!
No plagiarism Please!
A tire inflated with air is an example of a ___________________________.
Evidence -
Explanation -
A pellet of sodium (Na) sliced in two pieces is an example of a _____________________________.
Evidence -
Explanation -
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Hey! Could you check these answers to make sure they are all correct? If they aren't, could you please help me to figure out what I did wrong?
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phs.blackboard.com/webapps/assessment/take/take.jsp?course_assessment_id%3D 36688_1&course_id%3D_31958 1&content_id%3_1130567_1&-
8r
10
13 140 15
16
20
11
12
17
18
19
20
A Moving to another question will save this response.
Quèstion 6
Select the statement that is not supported by the following equation:
q=0=(mwater)(Cwater)(ATwater)+ (mmetal)(Cmetal)( ATmetal)
The total change in heat is the sum of the changes in heat of water and a metal.
Energy is conserved.
Energy is transferred between water and a metal.
Energy is lost during a calorimetry experiment.
A Moving to another question will save this response.
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&
%23
9.
6.
00
进3
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Chemistry
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Related Questions
- 2. What measurements might you record regarding water samples to assist with the quantification process? How might these measurements have error introduced? 3. Create a table of your observations made during the experiment. For example: Sample 2 Sample 1 Initial After shaking Write a brief summary of any conclusion that were reached. 4. With your group, write a sentence statement of the objective of the experiment and the method that will be used.arrow_forwardplease answerarrow_forwardFINAL Experiment 1- January 2021_-789644623 - Saved Layout Review View Table A friend of yours went panning for gold last weekend and found a nugget that appears to be gold. With your newfound scientific prowess, you set out to determine if it is really gold. Your tests show that the nugget has a mass of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to 8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend? acerarrow_forward
- All one questionarrow_forwardQuestion 35arrow_forwardView History Bookmarks Develop Window Help A east.cengagenow.com [References) 1 pt EXERCISE Unit Conversion 1 pt Drag conversion units onto the boxes in the equation to make conversions. Some boxes can be left empty. Click on a unit to remove it from its position. 1 pt 1 cm³ Cu 9 g Cu 9.5 x 1021 atoms Cu 1 g Cu 1 pt 1 kg 1000 g 1 cm = 1 mL 1 pt 1 L 1000 cm3 1 pt 1 pt 520 L x 1 pt 1 pt 1 pt A piece of copper has a volume 520 L. What is the mass of the sample, in units of grams? In the boxes above, enter the correct setup that would be used to solve this problem. 1 pt 1 pt Check Next (2 of 3) 1 pt 1 pt Submit Answer Try Another Version 2 item attempts remaining 1 ptarrow_forward
- Part D Complete column 4 of the table, excluding the isotope symbol and the cells that are already filled. 4 Protons Neutrons Electrons 36 Mass no. 81 Express your answers as integers. Enter your answers in the order given in the table from top to bottom separat ? P4, n4 = Submit Request Answer M... Sp.. ex... Co. В. 388 amazon AC.arrow_forwardomfg answer thisarrow_forwardPlease help me complete question 1,2,and 3arrow_forward
- Please let me know which 2 answers are correct, an explanation including evidencearrow_forwardHeavy metals are analyzed in the water of river Emajõgi. Choose correct term to each description. Calcium in the water Water of the river (as it flows) Water of the river taken to the laboratory Water (as H₂0) Lead in the water Chromium in the water Choose... Choose... Sample Matrix Analysis object Analyte Choose... Choose... Choose... IN 211 TE ETarrow_forwardplease write in the correct format as givenarrow_forward
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Recommended textbooks for you
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning