PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date on penny: 64 Concentration of standard Cu solution: 0.300 M Volume, Standard Cu (ml) Volume, 1 M HNO, (mL) (Cu) (M) % Transmittance Absorbance (use Eq. 4) Test tube 1 2 0-06 84.3% 0.0 74 Test tube 2 0.15 60.95 l6 0.215 8. 2 0.24 45.31. 0.344 Test tube 3 Standard 0.300 33.65% 0.473 52.8%. 0.277 Unknown 1.426 84.3% 2-0.27.52.8% %3D -Caril on ( 2-0.074) 10
PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date on penny: 64 Concentration of standard Cu solution: 0.300 M Volume, Standard Cu (ml) Volume, 1 M HNO, (mL) (Cu) (M) % Transmittance Absorbance (use Eq. 4) Test tube 1 2 0-06 84.3% 0.0 74 Test tube 2 0.15 60.95 l6 0.215 8. 2 0.24 45.31. 0.344 Test tube 3 Standard 0.300 33.65% 0.473 52.8%. 0.277 Unknown 1.426 84.3% 2-0.27.52.8% %3D -Caril on ( 2-0.074) 10
Chemistry
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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
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How do I find the mass and the percent of Cu with the data given?
![PART B. Spectrophotometric Determination of the Copper Content of a Penny
Mass of penny:3.138
Date on penny:1964
Concentration of standard Cu solution: O.300 M
Volume, Standard
Cu (mL)
Volume, 1 M
|Cu] (M) % Transmittance Absorbance
HNO, (mL)
(use Eq. 4)
Test tube 1
2.
0-06
84.3%
0.074
Test tube 2
0.15
60.950%
0.215
8
2
0.24
45.31.
0.344
Test tube 3
Standard
0.300
33,65%
0.473
52.8%
0.277
Unknown
mce)
antilog( 2-absoroen
)
1.926
84.3%
(2-0.217)
=52.8%
%3D
2-0.074 10
8.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc247cb8d-78ad-4f89-a50f-ab06364ea5f4%2F25d4b4b5-2c47-45b8-84c5-afa4a393fdef%2F596o3o5_processed.jpeg&w=3840&q=75)
Transcribed Image Text:PART B. Spectrophotometric Determination of the Copper Content of a Penny
Mass of penny:3.138
Date on penny:1964
Concentration of standard Cu solution: O.300 M
Volume, Standard
Cu (mL)
Volume, 1 M
|Cu] (M) % Transmittance Absorbance
HNO, (mL)
(use Eq. 4)
Test tube 1
2.
0-06
84.3%
0.074
Test tube 2
0.15
60.950%
0.215
8
2
0.24
45.31.
0.344
Test tube 3
Standard
0.300
33,65%
0.473
52.8%
0.277
Unknown
mce)
antilog( 2-absoroen
)
1.926
84.3%
(2-0.217)
=52.8%
%3D
2-0.074 10
8.
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