3. (10pts)
(a) Explain the principle of Raman spectroscopy? How this technique is useful to characterize carbon nanomaterials?
(b) Explain how XRD can be useful to characterize nanocomposites, by taking polymer-clay nanocomposite as example
3. (10pts) (a) Explain the principle of Raman spectroscopy? How this technique is useful to characterize...
(15 pts.) Infrared microscopy is valuable technique for characterizing materials. A. Explain the spatial resolution of infrared microscopy is significantly worse than the spatial resolution of Raman microscopy although they both are vibrational spectroscopy techniques. B. Why is a CCD not an appropriate detector for infrared imaging, but it is a useful detector for Raman imaging? 3.
Explain the Spectroscopic Technique of Flourescence and how it can be used to characterize Tetraphenylporphyrin. Thanks! Will rate!
Question 6 (3 marks) (a) Describe how you could use both graphite furnace atomic absorption spectroscopy (GFAAS) or inductively coupled plasma emission spectroscopy (ICP-AES) to analyse a blood sample that is suspected to contained elevated levels of lead (b) If the same blood sample was also thought to contain high levels of arsenic in addition to lead, which technique would you use? Explain why
Describe and discuss a cryptanalysis technique of the Vigenere Cipher. Specifically, how can math help break a cipher? Provide an example and explain.
In your own words, explain how Transition lenses are an example of Le Chatelier's principle. In your answer, address: a. What is being added or removed? b. Is it a product or reactant in the chemical reaction? How does this relate to Le Chatelier's principle? c. How does this effect the color of the lenses?
Understanding Movies College 6. Explain what structuralism is and provide one example of a structuralist technique that influenced mainstream filmmaking. (2 points) 7. Provide an example of your choosing of a film that uses dialectical conflict/binary oppositions (these terms are interchangeable) and explain how this technique is used to emphasize the film's themes or symbolism. (2 points) 8. List the three criteria that a film must meet to pass the Bechdel Test and explain what this test is designed to...
2. Explain how you can use IR spectroscopy to differentiate samples of the following two compounds: OH OH VS VS. 3. Would you expect a cis-alkene or a trans-alkene to have a stronger C-C IR signal? Explain. cis-alkene trans-alkene 15
ii) (4 marks) Briefly explain how 1H-NMR spectroscopy would allow you to distinguish between the 3 isomers of butyl alcohol. MOH LOH
1.a IR spectroscopy and Thin Layer Chromatography (TLC) is very convenient in tracking reactions. Explain How you used both IR and TLC to track your reaction. Was your reaction complete when you did your initial TLC check? If so, how can you tell? 1.b Discuss how yield can be correlated to the efficacy of a reaction? Why are yields never 100%?
ng Pattern 3. Explain how 'H-NMR spectroscopy could be used to distinguish between the two compounds shown below. Be as specific as possible. [10 Points] CH2COCH3 CH2CH3 4. Predict the approximate chemical shift position for each of the different hydrogens in the 'H-NMR spectrum of this compound. [10 Points] Cl CH2CH2-COCH2CH3 . Predict the multiplicity of each of the signals in the H-NMR spectrum of the