22. The amount of lead in naphtha may be determined by reaction withdithizone and measurement of the absorption of dithizone by aspectrophotometer at a wavelength ofA.318 nmB.510 nmC.620 nmD. 825 nm23. The transmittance of a blue molybdenum compound, as measuredby a Beckman DU spectrophotometer, is used to determine traceconcentrations ofA arsenteB chromiumC. leadDnickel

The questions provided relate to analytical techniques used in chemical analysis, specifically in…

22. The amount of lead in naphtha may be determined by reaction with dithizone and measurement of the absorption of dithizone by a spectrophotometer at a wavelength of A. 318 nm B. 510 nm C. 620 nm D. 825 am 23. The transmittance of a blue molybdenum compound, as measured by a Beckman DU spectrophotometer, is used to determine trace concentrations of A arsenic B chromium C. lead D nickel

22. The amount of lead in naphtha may be determined by reaction with dithizone and measurement of the absorption of dithizone by a spectrophotometer at a wavelength of A. 318 nm B. 510 nm C. 620 nm D. 825 am 23. The transmittance of a blue molybdenum compound, as measured by a Beckman DU spectrophotometer, is used to determine trace concentrations of A arsenic B chromium C. lead D nickel

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...

See similar textbooks

Similar questions

3. Consider the following for ¹H8¹Br: Two overlapping bands with lines 16.92 cm-¹ apart, one strong band centered at 2559 cm³¹ and another at 2468 cm¹ that increases in intensity when temperature is raised. Calculate re, K, and De for ¹H8¹Br. Given: mass of 8¹Br = 80.9163 amu, mass of ¹H = 1.007825 amu
View Available Hint(s) % Submit Provide Feedback e to search 80% Home End Insert Delete F8 F9 F10 F11 F12 %23 % & 4. 6 8. 9 Backspace T. Y U G H JK C VB N M O
Why would a chemist using a spectrophotometer need to perform both a scan across all wavelengths and a scan at a specific wavelength?
Over a period of 3.0 hours, a detector sensitive to 450 nm photons collects a total of 2.3 x10 -2 J of energy. How many photons struck the detector during this period of time?
The two nuclei in the nitric oxide (NO) molecule are 0.1154 nm apart. The mass of the most common nitrogen atom is 2.326 * 10-26 kg, and the mass of the most common oxygen atom is 2.656 * 10-26 kg. Find the moment of inertia of the NO molecule.
Calculate the frequency range in Hz for green light using the Helmholtz Table. _____________________Hz < v green < _________________Hz Wavelenght, nm Color of light absorbed Complementary color of light 400-435 Violet Yellowish-green 435-480 Blue Yellow 480-490 Greenish-Blue Orange 490-500 Bluish-Green Red 500-560 Green Purple 560-580 Yellowish-Gren Violet 580-595 Yellow Blue 595-610 Orange Greenish-Blue 610-700 Red Bluish- Green
Part A1: Do you notice any pattern in the color of the light used to detect absorbance (preset) and the color of the solution? If so, describe the pattern. What happened to the transmittance when the wavelength being detected was changed to approximately the same color as the solution? Try to come up with an explanation for this. How does the percent transmittance of the preset wavelength compare to the percent transmittance when looking at the transmittance over the entire visible spectrum? What happened to the transmittance when the width of the sample was changed? Explain why this makes sense. Explain why there was an upper maximum on the concentrations for each solution. What would happen to the absorbance or percent transmittance of a sample above that concentration? If you needed to measure the exact concentration of a solution whose concentration is above that limit, is there anything you can do?