Possible volumes to dilute range Copper atomic mass 1,5, and 10 mL 0.01 -0.5 M 63.546 y= 0.165x-0.0704 Calibration curve R² = 0.9637 1050 0.052 0.054 -0.056 -0.058 -0.060 -0.062 -0.064 -0.066 -0.068 0.0000 0.0200 0.0400 0.0600 0.0800 0.1000 0.1200 0.1400 [CuSO4] (M) ta Pod 4 Data 84°F Clear
Possible volumes to dilute range Copper atomic mass 1,5, and 10 mL 0.01 -0.5 M 63.546 y= 0.165x-0.0704 Calibration curve R² = 0.9637 1050 0.052 0.054 -0.056 -0.058 -0.060 -0.062 -0.064 -0.066 -0.068 0.0000 0.0200 0.0400 0.0600 0.0800 0.1000 0.1200 0.1400 [CuSO4] (M) ta Pod 4 Data 84°F Clear
Chapter7: Statistical Data Treatment And Evaluation
Section: Chapter Questions
Problem 7.12QAP
Related questions
Question
- What does your plot tell you about the relationship between copper concentration and absorbance? What does each component of your plot tell you?
Relationship between copper concentration and absorbance:
The slope indicates:
The R-squared value indicates:
The intercept indicates:
Molar Absorptivity and Copper Sulfate Concentration in Sample
- (a) Based on your calibration curve, what is the molar absorptivity at 635 nm? (Recall Beer’s law. The cuvette width is 1 cm.)
(b) Calculate the concentration of copper (II) in the supplement sample, then convert this concentration into mg/mL. Does the label on the supplement match the amount of copper sulfate you quantified using your calibration curve?
below is a picture of our data and equation
![Possible volumes to dilute
range
Copper atomic mass
1,5, and 10 mL
0.01 -0.5 M
63.546
y= 0.165x-0.0704
Calibration curve
R² = 0.9637
1050
0.052
0.054
-0.056
-0.058
-0.060
-0.062
-0.064
-0.066
-0.068
0.0000 0.0200 0.0400 0.0600 0.0800 0.1000 0.1200 0.1400
[CuSO4] (M)
ta
Pod 4 Data
84°F Clear](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0d44a2c6-a889-44cd-a402-2086c3d40877%2F5ae0ab26-3c8c-4949-8826-ff10a8f8a43f%2Fu32bf2q_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Possible volumes to dilute
range
Copper atomic mass
1,5, and 10 mL
0.01 -0.5 M
63.546
y= 0.165x-0.0704
Calibration curve
R² = 0.9637
1050
0.052
0.054
-0.056
-0.058
-0.060
-0.062
-0.064
-0.066
-0.068
0.0000 0.0200 0.0400 0.0600 0.0800 0.1000 0.1200 0.1400
[CuSO4] (M)
ta
Pod 4 Data
84°F Clear
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