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- what is Spectroscopy? describe and explain it's purposence started, this test must be completed in one sitting. Do not leave Remaining Time: 31 minutes, 29 seconds. Question Completion Status: es ces Moving to another question will save this response. Question 12 Which of the following has the greatest IR stretching frequency? С -Н он N-H ос сI ос Br A Moving to another question will save this response. MacBook Air O0 000 F4 F1 F2 F3 F5 F6 77. Explain what is meant by signal in instrumental analysis.
- Interpret IR dataCan you please explain this ir to meFrom the following options what's the reason why we use absorption and not percent transmittance for UV-Vis spectrophotometry? The percent transmittance is not detectable The absorption has better resolution The food coloring reacts to the light if using the percent transmittance The absorption is directly proportional to the concentration of the solution None of the above
- What is the IR and HNMRAndCNMR?Which of the following is NOT a key feature of using an attenuated total reflectance (ATR) accessory to collect an infrared (IR) spectrum? O Faster sampling O Higher quality spectral databases Improving sample-to-sample reproducibility Maximizing user-to-user spectral variation3. What is the purpose of using blank before measuring the absorbance of a substance?
- What is continuous spectrum?Which of the following statements concerning spectroscopy is correct? A) Concentration of a solution is directly proportional to the % of photons transmitted. B) Salt plates are often used in IR spectroscopic measurements because they are transparent in that region. C) Molar absorptivity is a constant for given species, regardless of concentration or wavelength. D) Fluorescence excitation is usually red-shifted from emission wavelength. E) 2 or more statements are correct. The absorbed energy to enable vibrational level transition falls within which wavelength range A) radio wave B) microwave C) IR D) X-ray E) UV and visibleDescribe a black body radiator and its spectrum.