A UV-visible spectrometry cuvette has erosions on one of the two faces through which the radiation passes. Will this affect the measured absorbance?(A). Yes, errors will be obtained due to excess(B). Yes, errors will be obtained due to defect(C). Yes, and the error will be due to excess if the eroded face is the one through which the radiation enters and due to defect if the eroded face is the one through which the radiation exits(D). Yes, and the error will be due to defect if the eroded face is the one through which the radiation enters and due to excess if the eroded face is the one through which the radiation exits

A UV-visible spectrometry cuvette has erosions on one of the two faces through which the radiation passes. Will this affect the measured absorbance?(A). Yes, errors will be obtained due to excess(B). Yes, errors will be obtained due to defect(C). Yes, and the error will be due to excess if the eroded face is the one through which the radiation enters and due to defect if the eroded face is the one through which the radiation exits(D). Yes, and the error will be due to defect if the eroded face is the one through which the radiation enters and due to excess if the eroded face is the one through which the radiation exits

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

Chapter11: Atomic Mass Spectrometry

Section: Chapter Questions

Problem 11.2QAP

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A UV-visible spectrometry cuvette has erosions on one of the 2 faces through which the radiation passes. How will this affect the measured absorbance?(A). Yes, errors will be obtained due to excess(B). Yes, errors will be obtained due to defect(C). Yes, and the error will be due to excess if the eroded face is the one through which the radiation enters and due to defect if the eroded face is the one through which the radiation exits(D). Yes, and the error will be due to defect if the eroded face is the one through which the radiation enters and due to excess if the eroded face is the one through which the radiation exits
Does a calibration curve alwasy compare concentration and absorbance? Or can it compare concentration and %T as well?
A student calibrated the mini-spectrophotometer with a blank solution, and then went to check their solution. They got a fingerprint on the cuvette while filling it. Because of this, the expected reading for the absorbance would be [Select] [Select] ✓ [Select] too high too low O which would cause the calculated value of Ke to be
What is the concentration of a sample that transmits 70% signal at a certain wavelength upon analysis? The molar absorptivity is 2.0 and the cuvette used has a width of 1.0 cm. Additionally, (a) What is the absorbance of the sample at this wavelength? b) And what is the fraction of light that would be transmitted by the sample if the concentration is increased three times?
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Q1 (a) Explain how the peaks in Infra-Red spectroscopy are generated and what information the peaks can provide about the molecule analysed.(250 words limit) 25% (b) Explain how interaction of Ultra-Violet / Visible light with a molecule produces an absorbance and hence a peak, indicating what parts of a molecule can absorb this radiation. (250 words limit) (25%)
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