Calculate the percent error of the mean of the densities for the 10 μL aliquots and for the 300 μL aliquots. Calculate the average error and standard deviation for each set,
Calculate the percent error of the mean of the densities for the 10 μL aliquots and for the 300 μL aliquots. Calculate the average error and standard deviation for each set,
Macroscale and Microscale Organic Experiments
7th Edition
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Kenneth L. Williamson, Katherine M. Masters
Chapter6: Steam Distillation, Vacuum Distillation, And Sublimation
Section: Chapter Questions
Problem 3Q
Related questions
Question
needing help with step 7 of Part F
all data is provided
![Part F: Volume + Viscosity
glycerine
3
acetone density = 784 kg/m³ tube pre weigh 1.073g
glycerine density = 1260 kg/m³
+10μL 1.076 g
Green acetone
tubre pre шегда
weigh
+300
+600
+900
+1200
☆
1.092g
1.4449
1.644
1.8749
2₁1458
+ 20μL 1.078g
+30 ML 1.080 of
+40μL 1.082 g
+50μL 1.084 g
uellow glycerin
1.0968
1,306g
1.521 g
1.719 &
G
1.913
G
acetone
1.060
1.065g
1.071g
1.076
1.0४/४
1.0968
chance of more error when liquid is more viscos](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F84f39a0e-1c16-43ec-bcb3-7f889ca233a2%2F052e5e89-9316-421e-b970-bdce8dc1527e%2F1rs16rp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Part F: Volume + Viscosity
glycerine
3
acetone density = 784 kg/m³ tube pre weigh 1.073g
glycerine density = 1260 kg/m³
+10μL 1.076 g
Green acetone
tubre pre шегда
weigh
+300
+600
+900
+1200
☆
1.092g
1.4449
1.644
1.8749
2₁1458
+ 20μL 1.078g
+30 ML 1.080 of
+40μL 1.082 g
+50μL 1.084 g
uellow glycerin
1.0968
1,306g
1.521 g
1.719 &
G
1.913
G
acetone
1.060
1.065g
1.071g
1.076
1.0४/४
1.0968
chance of more error when liquid is more viscos
![Part F: Volume vs. Viscosity
1:09
Carry out the following procedure with glycerine and then repeat the experiment using
acetone.
Note any concerns and differences between what you observed with water and these
substances as they are pipette. Do not pre-rinse the tip in order that any differences between
the first aliquot and subsequent aliquots may be observed.
1. Using the 2-20 μL pipette, dispense 10 µL of material into a massed 1.5 mL conical
microtube. Determine the mass with the liquid.
2. Repeat with additional 10 μL aliquots until 50 μL total are dispensed to the tube (similar to
what was done in Part E).
3.
Use the appropriate density of the liquid to determine the volume dispensed.
4. Using the 100 - 1000 μL pipette, dispense 300 µL of the liquid into a massed 1.5 mL
conical microtube. Determine the mass of the tube with the aliquot.
5. Repeat with an additional 300 μL aliquot until a total of 1200 µL of liquid is in the tube.
6. Use the appropriate density to determine volume dispensed.
7. Calculate the percent error of the mean of the densities for the 10 μL aliquots and for the
300 μL aliquots. Calculate the average error and standard deviation for each set.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F84f39a0e-1c16-43ec-bcb3-7f889ca233a2%2F052e5e89-9316-421e-b970-bdce8dc1527e%2Fj455tzo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Part F: Volume vs. Viscosity
1:09
Carry out the following procedure with glycerine and then repeat the experiment using
acetone.
Note any concerns and differences between what you observed with water and these
substances as they are pipette. Do not pre-rinse the tip in order that any differences between
the first aliquot and subsequent aliquots may be observed.
1. Using the 2-20 μL pipette, dispense 10 µL of material into a massed 1.5 mL conical
microtube. Determine the mass with the liquid.
2. Repeat with additional 10 μL aliquots until 50 μL total are dispensed to the tube (similar to
what was done in Part E).
3.
Use the appropriate density of the liquid to determine the volume dispensed.
4. Using the 100 - 1000 μL pipette, dispense 300 µL of the liquid into a massed 1.5 mL
conical microtube. Determine the mass of the tube with the aliquot.
5. Repeat with an additional 300 μL aliquot until a total of 1200 µL of liquid is in the tube.
6. Use the appropriate density to determine volume dispensed.
7. Calculate the percent error of the mean of the densities for the 10 μL aliquots and for the
300 μL aliquots. Calculate the average error and standard deviation for each set.
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