* TRANSMITTANCE 5H Proton NMA 160 140 CO 8200 2963.84 6 120 HAVENUMBERS 5 100 Im 80 1883.05- 60 452.6893:69 377.35 1H 40 -8 2 3H 2H 869 MF C10H14 MW 134 %C 89.5 %H 10.5 3H ™ 1 PPM 20 PPM 0
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Provide the structure (draw) for the IR and NMR spectra provided.
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- 1. A solution that absorbs radiation with a λmax at 475nm is placed within a UV visible spectrophotometer. An absorbance of 0.82 is recorded. Calculate the percentage of the incident light that is being absorbed.7. Explain what is meant by signal in instrumental analysis.If two signals differ by 1.5 ppm in a 300 MHz spectrometer, by how much do they differ in a 500 MHz spectrometer?
- Complete the information on these tables: wavelength 470 nm conc Um absorbance % transmission 700 0.45 35.58% 500 0.32 47.78% 300 0.19 64.2% 100 0.06 86.23% wavelength 502 nm conc Um absorbance % transmission 700 1.08 8.37% 500 0.77 16.99% 300 0.46 34.57% 100 0.15 70.15% Which mathematical relationship is most useful to relate concentration to the amount of light passing through the solution? (% Transmission, or Absorbance), Why? How does the slope of the absorbance/concentration graph vary with wavelength? Is there an “optimum” wavelength for your KMnO4 sample?You measure that the %T of a sample at 850 nm is 20%. What is the absorbance of this sample? Report your answer to three decimal places.1. What is the concentration of the dye in a solution with a percent transmittance reading of 61.6% at 570 nm? 1a. If the solution in Part 1 was made by taking 10.00 mL of a stock solution and diluting it to 100.00 mL, what is the concentration of the dye in the stock solution?
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- Spectral Analysis IR Analysis Interpret the IR spectrum. Transmitance 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 3500 3000 Infrared Spectrum 2500 Wavenumbers (cm-1) 2000 Cha 1500 1000You measure that the %T of a sample at 450 nm is 11%. What is the absorbance of this sample?Q10) Describe spectrophotometry tests? If you were given a solution that contains an absorbing molecule how would you determine its max absorbance?