2. How many grams of Cu(C2H302)2 · H20 (FW = 199.65 g/mol) are needed to prepare 500.0 mL of %3D a 0.250 M solution? 3. A stock solution of Cu(C2H302)2 has a concentration of 0.270 M. If 6.00 mL of this solution is transferred to a 50.00 mL flask and then diluted with distilled water, what is the final concentration of Cu2+ ion? 4. Using the calibration curve below, what is the concentration of a Cu2+ solution which had an absorbance of 0.450? Absorbance as a Function of Concentration of Cu+ 0.800 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 [Cu?*] Absorbance
2. How many grams of Cu(C2H302)2 · H20 (FW = 199.65 g/mol) are needed to prepare 500.0 mL of %3D a 0.250 M solution? 3. A stock solution of Cu(C2H302)2 has a concentration of 0.270 M. If 6.00 mL of this solution is transferred to a 50.00 mL flask and then diluted with distilled water, what is the final concentration of Cu2+ ion? 4. Using the calibration curve below, what is the concentration of a Cu2+ solution which had an absorbance of 0.450? Absorbance as a Function of Concentration of Cu+ 0.800 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 [Cu?*] Absorbance
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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answer 2, 3, and 4
![2. How many grams of Cu(C2H3O2)2• H2O (FW = 199.65 g/mol) are needed to prepare 500.0 mL of
a 0.250 M solution?
3. A stock solution of Cu(C2H3O2)2 has a concentration of 0.270 M. If 6.00 mL of this solution is
transferred to a 50.00 mL flask and then diluted with distilled water, what is the final
concentration of Cu2+ ion?
4. Using the calibration curve below, what is the concentration of a Cu2+ solution which had an
absorbance of 0.450?
Absorbance as a Function of Concentration of Cu2+
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
[Cu2*]
Absorbance](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F00bf5977-87d1-44a8-abc7-12aa1f120220%2F778da76b-f33a-42ce-99b6-5e8d045deef5%2Fwoxfime_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. How many grams of Cu(C2H3O2)2• H2O (FW = 199.65 g/mol) are needed to prepare 500.0 mL of
a 0.250 M solution?
3. A stock solution of Cu(C2H3O2)2 has a concentration of 0.270 M. If 6.00 mL of this solution is
transferred to a 50.00 mL flask and then diluted with distilled water, what is the final
concentration of Cu2+ ion?
4. Using the calibration curve below, what is the concentration of a Cu2+ solution which had an
absorbance of 0.450?
Absorbance as a Function of Concentration of Cu2+
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
[Cu2*]
Absorbance
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