1. Calculate the total mass of the NaCl solution transferred in each trial of this experiment. Note: You should have completed three trials for each of the four measuring devices, meaning 12 trials total. 2. Use Equation 1 and the determined mass and volume values to calculate the density of the NaCl solution for each trail. Density (9) = mass(g) volume(mL) Equation 1 mL 3. Determine the average density, using Equation 2, and standard deviation, using Equation 3 and 4 for each of the four measuring devices. Σχ. Average (x)= -= sum of all values to be averaged number of terms to averaged Equation 2 n Deviation from the Mean (d.) (x − x) Equation 3 2 2 = Standard Deviation (s) = Ed n-1 = Σ (x-x) n-1 Equation 4
1. Calculate the total mass of the NaCl solution transferred in each trial of this experiment. Note: You should have completed three trials for each of the four measuring devices, meaning 12 trials total. 2. Use Equation 1 and the determined mass and volume values to calculate the density of the NaCl solution for each trail. Density (9) = mass(g) volume(mL) Equation 1 mL 3. Determine the average density, using Equation 2, and standard deviation, using Equation 3 and 4 for each of the four measuring devices. Σχ. Average (x)= -= sum of all values to be averaged number of terms to averaged Equation 2 n Deviation from the Mean (d.) (x − x) Equation 3 2 2 = Standard Deviation (s) = Ed n-1 = Σ (x-x) n-1 Equation 4
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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Transcribed Image Text:1. Calculate the total mass of the NaCl solution transferred in each trial of this
experiment. Note: You should have completed three trials for each of the four
measuring devices, meaning 12 trials total.
2. Use Equation 1 and the determined mass and volume values to calculate the density
of the NaCl solution for each trail.
Density ()
=
mass(g)
volume(mL)
Equation 1
mL
3. Determine the average density, using Equation 2, and standard deviation, using
Equation 3 and 4 for each of the four measuring devices.
Σ.χ.
Average (x):
-=
sum of all values to be averaged
number of terms to be averaged
Equation 2
n
Deviation from the Mean (d)
=
(x - x)
Equation 3
2
2
Σαΐ
Σ (x-x)
Standard Deviation (s)
=
n-1
Equation 4
n-1
=
Transcribed Image Text:Table 1. 12 mL syringe
Trial 1
Initial volume
3ml
Final volume
11ml
Mass of empty
2.28g
Styrofoam cup
14.11g
Mass of Styrofoam
cup + NaCl solution
Table 2. 60 mL syringe
Trial 1
Trial 2
Initial volume
3ml
3ml
Final volume
33ml
33ml
2.24g
2.26g
Mass of empty
Styrofoam cup
25.26g
25.35g
Mass of Styrofoam
cup + NaCl solution
Table 3. 250 mL beaker
Trial 1
Trial 2
Initial volume
3ml
3ml
Final volume
23g
23g
2.24g
2.26g
Mass of empty
Styrofoam cup
27.45g
27.40
Mass of Styrofoam
cup + NaCl solution
Table 4. 50 mL Erlenmeyer
Trial 1
Trial 2
Initial volume
3ml
3ml
3ml
Final volume
30ml
30ml
30ml
2.25g
2.25g
2.25g
Mass of empty
Styrofoam cup
35.77g
35.68g
35.64
Mass of Styrofoam
cup + NaCl solution
2. For each type of glassware, report the determined density of the egg just floated?
Report the density as a value of density ± standard deviation.
Trial 3
3ml
33ml
2.29g
25.34g
Trial 3
3ml
23g
2.24g
27.33
Trial 3
Trial 2
3ml
11ml
2.25g
13.92g
Trial 3
3ml
11ml
2.24g
13.83g
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