Show work. Don't give Ai generated solution Gold is a common substrate for surface plasmonresonance (SPR) and quartz crystal microbalance (QCNtechniques because it is(A) dielectric.(B) more prone to oxidation than silver.(C) more reflective than silver at wavelengths shorterthan 550 nm.(D) compatible with surface chemistry/ immobilizatiochemistries.

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Answered: Gold is a common substrate for surface…

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter12: Atomic X-ray Spectrometry

Section: Chapter Questions

Problem 12.1QAP

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Resistivity measurements at 300 K show that an annealed metal single crystal has amonovacancy concentration CV = 10-9. When the same crystal is quenched from a hightemperature, the measurements indicate CV = 2x10-3. Calculate the temperature of thequench [Take Hf = 51.4 kJ/mol and R = 8.314 J/mol.K]. State any assumption involved. (5)(b) Explain why the esistivity of a metal is expected to be found more at room temperature after quenching. Hint: Use Matthiessen’s rule (find out by self-studying and cite thesource.)
2. (d) Describe three of the functions of the matrix in fibrereinforced composites. (e) With the aid of sketches compare and contrast the fatigue fracture appearance between an alloy that failed at a low fatigue load and one that failed at a high fatigue load. (f) Propose and briefly describe one non-destructive method that can be used to detect small cracks on the surface of a metallic alloy .
The transmittance of a solution measured at 590 nm in a 1.5-cm cuvette was 76.2%. (a) What is the corresponding absorbance?(b) If the concentration is 0.0802 M, what is the absorptivity of this species at this wavelength? (c) If the absorptivity is 10,000 L mol-1 cm-1, what is the concentration?
13
Which of two instrumental modes, atomic absorption or atomic emission, results in the better detection of metal ions in general? Describe the processes that can analyte solution goes through during atomization in the graphite furnace?
What is the major limitation of IR regarding the materials that can be used for instrumental components.
How does fluorescence work in bulk semiconductors?
55
At room temperature (i.e., 300 K), a semiconductor made of gallium arsenide (GaAs) has an intrinsic electron concentration (ni) of 1.8×10^6 cm^-3 , an electron mobility (μe) of 8500 cm^2 V^1 s^-1 , and a hole mobility (μh) of 400 cm^2 V^-1 s^-1 . \ (a) Calculate the intrinsic electric conductivity and resistivity of GaAs at 300 K. (b) When GaAs is doped with an ionized donor concentration of 10^15 cm^-3 , where is the Fermi level? Calculate the electric conductivity of the doped GaAs. (c) If the semiconductor sample discussed in (b) is further doped with an ionized acceptor concentration of 9×10^14 cm^-3 , what is the free hole concentration and electric conductivity of the sample?
To measure the absorbance of Fe(SCN)2+, write a procedure (detailed in steps) to accurately determine which wavelength/LED colour setting to use on the Vernier GoDirectTM
Please don't provide handwritten solution ....
a) Calculate the basicity and acidity of a slag composed of 41 wt% SiO2; 13 wt% FeO; 39 wt% CaO, 7 wt% MgO. (Molecular Weights; Ca: 40.08, O: 16.0, Fe: 55.85, Si: 28.08, Mg: 24.31) b) Describe the formation stage of white matte during the pyrometallurgical production of copper. Calculate the theoretical amount of Cu in the white matte. (Molecular Weights; O: 16, Fe: 55.85, Si: 28.08, Cu: 63.5, S: 32.06).

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