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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
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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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.
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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