4. A sample of the same compound B is measured to have an absorbance of 0.90 in a 1.00 cm path length cell at 500 nm. What is the concentration of B in this sample, assuming Beer's Law holds?
4. A sample of the same compound B is measured to have an absorbance of 0.90 in a 1.00 cm path length cell at 500 nm. What is the concentration of B in this sample, assuming Beer's Law holds?
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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Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
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Solve question 4.
Transcribed Image Text:RE-LAB CALCULATIONS
1. How many grams of CuSO4-5 H₂O are needed to prepare 100.0 mL of a 0.15 M
CuSO4 (aq) solution?
2. In order to make a solution that is 0.030 M in CuSO4, what volume of the above
solution should be diluted to 5.00 mL with water?
3. A 0.10 M solution of an unknown compound B is measured in a 1.00 cm path
length cuvette at a wavelength of 500 nm. The percentage of light transmitted
through the cell is 38%. What is the absorbance of this sample (A) at 500 nm?
Assuming Beer's Law holds, what is the value of & for compound B at 500 nm?
4. A sample of the same compound B is measured to have an absorbance of 0.90 in
a 1.00 cm path length cell at 500 nm. What is the concentration of B in this
sample, assuming Beer's Law holds?
5. What is meant by the term "green chemistry"? Why is copper(II) sulfate
considered to be more "green" than the cobalt (II) nitrate that was used
previously?
4-5
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