Read the buret volume at the bottom of the meniscus. Report the buret reading to one...
Read the buret volume at the bottom of the meniscus. Report the buret reading to one digit beyond the markings on the buret. Remember that the volume starts at zero at the top of the buret - the opposite of what would be seen when reading a graduated cylinder.
Since the markings are at every tenth of a milliliter, the volume level is between 46.8 mL and 46.9 mL. Mentally divide up the space between those markings and estimate one more digit
Solutions
Expert Solution
We can see that the meniscus
is more closer to 46.8, So the value is in between 46.8 and
46.85.
So if we divide the part we can say the reading is almost 46.83
ml.
Question 1
What is the correct reading of the volume in the pictured buret?
Make sure to report your reading with the appropriate significant figures.
Question 3
Suppose you are working with a NaOH stock solution but you need a solution with a lower concentration for your experiment. Calculate the volume of the 1.333 M stock NaOH solution needed to prepare 250.0 mL of 0.1170 M dilute NaOH solution.
Part A.3. the buret is filled with the NaOH titrant
and the initial volume reading is immediately recorded without
waiting the recommended 10-15 seconds. However in part B.1., the
10-15 seconds lapse does occur before the racing is made. Does this
technique error result in an increase, decrease, or have no effect
on the reported percent acetic acid on the vinegar? Expalin
Part 1:
Trial
Initial pH
Final pH
Final volume after titration
Initial Buret Reading
Total Volume Titrated
#1
3.34 pH
4.35 pH
47.50 mL
50 mL
2.50 mL
#2
3.39 pH
4.20 pH
47.90 mL
50 mL
2.10 mL
#3
3.39 pH
4.40 pH
47.00 mL
50 mL
3.00 mL
Part 2:
Trial
Initial pH
Final pH
Final volume after titration
Initial Buret Reading
Total Volume Titrated
#1
5.01 pH
5.03 pH
48.00 mL
50 mL
2.00 mL
#2
5.01...
write a reading report
1. Read no less than 3 paper on the topic of international
economics;
2. Paper need to be downloaded from Journal of International
Economics, International Economic Review in the past 3 years;
3. Write a reading report, which should include:
the main content of these paper, main methods, main
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directions
Volumes and molarities for titration of CdC2O4 solutions.
PART A Data
Initial reading of buret (KMnO4)
(mL) 0.50
Final Reading of buret (KMnO4)
(mL) 14.00
Molarity of KMnO4 solution (M)
0.000969
PART B DATA
Initial Reading of buret (NH3)
(mL) 1.00
Final reading reading of buret
(NH3) mL 22.50
Molarity of NH3 solution (M) 5.00
FOR PART A Find:
Moles of MnO4- used for titration
(mol)
Moles of C2O42- in 100.0mL of
solution (mol)
Molarity of C2O42-(M)
Molarity of Cd2+...
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please fix the code at the bottom to also report the percentages
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