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- Explain IR spectroscopy as a characterization technique.Since there are some inherent issues with polarimetric measurements of enantiomeric purity, suggest another technique that could be used to confirm the percent enantiomer excess.What is meant by transmittance and absorbance and which term is more preferable when doing expermines such as determining the formula of a complex ion using colorimetric method. please don't reject the question :'( I really need to know :'( :'(
- Noncontact AFM images for the HBC, or Hexa-peri-hexabenzocoronene molecule. (a) Stick model. (b) Constant-height AFM measurements for an HBC molecule on a Cu (111) surface substrate. (c) A pseudo-three-dimensional representation that highlights the local maxima. (d) Calculated electron density above the molecular plane. From Gross et al. [15 Links to an external site.]. Based on the AFM image shown in (b), what kind of substance is Hexa-peri-hexabenzocoronene? There may be more than one correct answer.Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples. Discuss how can we determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample.1. Instead of using an electrode to collect ions, why electron multiplier is needed as the detector for MS? 2. Discuss the role and advantage(s) of Full scan, selected ion monitoring, and MS/MS modes in chemical analysis. 3. Discuss how EI generates molecular ion and fragment ions. 4. Discuss how Positive CI and Negative CI form ions in MS. 5. Different from GCMS, why is an interface needed when coupling HPLC with MS?
- By definition e1 is absorbance concentration molar extinction coefficient none. of the aboveThe UV–visible spectrum of GLB-1 is given in Figure 2. i.What colour(s) will the deoxy and oxy forms of GLB-1 be? Note, an electromagnetic spectrum is reproduced in the Assessment area on the S315 website. ii.By comparing the bands on the right-hand side (around 550 nm) with those of oxy- and deoxymyoglobin, suggest what type of transition gives rise to these bands.Chemistry Can help with this IR characterization of phenacetin? Thanks.
- A Substance that is responsible for UV-vis absorption is? A. Chromophores B. Overtones C. Photons D. Beer-lambertBriefly give a general explanation about fluxionality and how it differs from isomerization or tautomerization. Also give reason how NMR spectroscopy is helpful in studying the fluxional behaviour of molecule.Predict the multiplicity/splitting pattern and indicate the integration value for each Hydrgen present in the boxes. Provide the simplest ratio.