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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,

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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
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.
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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