The UV-Vis Spectroscopy technique is based on: A. Rotational excitation B. Nuclear excitation C. Electronic excitation D. Vibrational excitation E. None of the above
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The UV-Vis Spectroscopy technique is based on:
A. Rotational excitation B. Nuclear excitation
C. Electronic excitation
D. Vibrational excitation
E. None of the above
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Solved in 2 steps
- A) Discuss how electrode works? What kind of signal it reads from the human body?In the spectrofluorometric analysis of quinine, which of the following statements/phrases can be considered a factor level? A. Concentration of 2 ppm of iodide B. Concentration of quenchers C. The use of iodide D. Use of QuenchersThis is about Beer-Lambert’s Law and UV-vis Spectroscopy: 1) How does a solution interact with light?2) How are absorbance and transmittance related? 3) How do you make an absorbance spectrum?
- A patient undergoing an MRI is surrounded by a tubeshapedscanner. What is the function of magnets in an MRI?Assume that you have an “X” solution that you do not know its concentration. But you have other X solutions with known concentrations and you know X solution absorbs maximum light at 575 nm. To calculate the unknown solution concentration, you have done some spectrophotometric measurements and obtained data given below. Prepare a standard curve by using the absorbance of known concentrations (Hint: you can learn how to prepare a standard curve by using Excell from youtube). Calculate the concentration of unknown.A drug has a measured diffusivity of 5*10^-6 cm^2/s^-1 at 37 degree Celsius. What is this drug’s Stokes-Einstein radius in nm?
- a. State TWO (2) advantages of Inductively coupled plasma-optical emission spectroscopy (ICP-OES) over Flame atomic absorption spectroscopy (FAAS).b. What are the TWO (2) advantages of graphite furnace AAS (GFAAS) over flame AAS (FAAS)?c. What is one of the main disadvantages that most flames used in AAShave?The particles resist collision due to the high zeta potential in a suspension containing negatively charged particles. The addition of an oppositely charged electrolyte into that suspension leads to O A. increased collision resist by the particles O B. gradual reduction in the zeta potential O C. no change in the zeta potential O D. higher zeta potential In which of the following form the insoluble chloramphenicol palmitate is used to reduce the bitter taste of the chloramphenicol base? O A. Powder O B. Spray OC. Suspension O D. Solution ype here to search LIFE Digital DIMatch the following items: [4] 1. 540 nm A. Wavescan 2. Quantity of light of a specific wavelength absorbed by a sample B. Standard series 3. Reference samples with a concentration range C. Absorbance 4. Absorbance values at all wavelengths D. Purple
- From your results, which component had the highest Rf value and which had the lowest? Based on your answer from the previous question, what could be the reason behind some components having an Rf value higher than the others? Compare the qualities of the two components that rendered the highest and lowest Rf After performing the simulation, what do you think are the possible practical applications of chromatographic techniques that are relevant to your program?Consider a bi convex lens with radius of curvatures |R1| = 30 mm and |R2| = 180 mm, ct = 5 mm and glass is N-BK7. This is used as camera lens in order to image a man who is at 1 km away from the camera. We want to resolve 10 cm on his body. Assume that λ = 550 nm. Using zemax, determine the MTF value for the resolution of R = 80 lp / mm in image plane which is placed at paraxial focus. (Hint: First, find the diameter of the lens) Which one: a.32.1 % b.28.7 % c.12.3 % d.58.5 % e.46.8 % f.57.2 % g.20.9 % h.15.6 %A chemistry student at GGC synthesized a new sulfonamide (S7) drug to help treat malaria. Using a spectrophotometer the student observed that S7 converts to a colorless molecule in the presence of malaria parasite called Plasmodium falciparum. To study the rate of reaction, the student recorded the absorbance/amount of S7 at a wavelength of 570 nm. The results are summarized in the table below: Time (s) Absorbance/Amount of S7 0.80 0.63 10 0.50 15 0.40 20 О.32 25 0.25 30 0.20 Determine the half-life of S7. Include units in your answer MacBook Air 000 000 F8 80 F7
