EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
4th Edition
ISBN: 9781119192107
Author: BULLARD
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Chapter 2, Problem 2.23P
Interpretation Introduction
(a)
The minimum and maximum acceptable values of C should be determined.
Interpretation Introduction
(b)
If Frank / Joanne is an Engineer or a Statistician should be determined by considering their statements.
Interpretation Introduction
(c)
The five possible reasons to produce defective products should be given and whether or not each of them be responsible for the drop-in quality should be determined.
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Quinine in a 1.939-g tablet was to be analyzed by dissolving it with 0.10 M HCl to a final volume of exactly 500 mL. This solution was diluted by adding 50.00 mL to a 100.0 mL flask and diluting to the mark.
Afterwards the fluorescence intensity was found to be 394 in arbitrary units. Under identical experimental conditions, a standard 150.0-ppm had an intensity of 184.Quinine in a 1.939-g tablet was to be analyzed by
dissolving it with 0.10 M HCl to a final volume of exactly 500 mL. This solution was diluted by adding 50.00 mL to a 100.0 mL flask and diluting to the mark. Afterwards the fluorescence intensity was found to be 394
in arbitrary units. Under identical experimental conditions, a standard 150.0-ppm had an intensity of 184. Calculate the number of milligrams in the original sample.
In order to measure riboflavin in a breakfast cereal, a 5.00-gram sample of the cereal was extracted with acetic acid and filtered. The extract was transferred to a 50.0 mL volumetric flask and diluted to the mark. The sample was transferred to a cuvette and the fluorescence was measured. The instrument read 59 units (Fluorescence units –an arbitrary scale). 24.00 mL of the cereal extract was sample was mixed with 1.0 mL of a riboflavin standard that was 0.500 ug/mL. The fluorescence of this mixture was measured and read 94 fluorescence units. Calculate the concentration of riboflavin per gram of cereal (use µg/gram of cereal).
Carbon monoxide is another common poison found in the forensic laboratory. Explain how UV-visible spectrophotometry is applied to quantify carbon monoxide in blood samples.
Chapter 2 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
Ch. 2 - Prob. 2.1PCh. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - Prob. 2.4PCh. 2 - Prob. 2.5PCh. 2 - Prob. 2.6PCh. 2 - Prob. 2.7PCh. 2 - Prob. 2.8PCh. 2 - Prob. 2.9PCh. 2 - Prob. 2.10P
Ch. 2 - Prob. 2.11PCh. 2 - Prob. 2.12PCh. 2 - Prob. 2.13PCh. 2 - Prob. 2.14PCh. 2 - Prob. 2.15PCh. 2 - Prob. 2.16PCh. 2 - Prob. 2.17PCh. 2 - Prob. 2.18PCh. 2 - During the early part of the 20th century,...Ch. 2 - Prob. 2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - The Prandtl number, Np,, is a dimensionless group...Ch. 2 - Prob. 2.27PCh. 2 - Prob. 2.28PCh. 2 - Prob. 2.29PCh. 2 - Prob. 2.30PCh. 2 - Prob. 2.31PCh. 2 - Prob. 2.32PCh. 2 - Prob. 2.33PCh. 2 - 2.34. You arrive at your lab at 8 a.m. and add an...Ch. 2 - Prob. 2.35PCh. 2 - Prob. 2.36PCh. 2 - Prob. 2.37PCh. 2 - Prob. 2.38PCh. 2 - Prob. 2.39PCh. 2 - A hygrometer, which measures the amount of...Ch. 2 - Prob. 2.41PCh. 2 - Prob. 2.42PCh. 2 - Prob. 2.43PCh. 2 - Prob. 2.44PCh. 2 - Prob. 2.45PCh. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Prob. 2.48PCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51PCh. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - Prob. 2.54PCh. 2 - Prob. 2.55P
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- A 25.0 mL aliquot was taken from a 500.0 mL sample of tonic water containing an unknown amount of quinine and diluted to a volume of 200 mL. At 347.5 nm, the fluorescence intensity of the diluted sample was measured 85.7 an arbitrary scale. Under similar conditions, a 27.5 ppm standard quinine solution had a fluorescence intensity of 185. Calculate the mass of quinine in the original tonic water sample in mg. Do not include units in your answer.arrow_forward3. In a fluorescence spectrum, what quantities are plotted on the x- and y-axes? In a calibration curve for a fluorescence experiment, what quantities are plotted on the x- and y-axes? 4. Explain the difference between an excitation spectrum and an emission spectrum. Why does the excitation spectrum occur at lower wavelengths than the emission spectrum? 5. What is the main difference in the spectra resulting from atomic emission and molecular emission? 6. Describe how you would use serial dilution to prepare 100 mL of a 0.50 ppm QS solution from a 10 ppm stock QS solution.arrow_forwardDefine the term Frequency Factor?arrow_forward
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