What factors determine the relative intensity of transitions in a pure rotational absorption spectrum? When will a maximum intensity be observed?
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- 5. a) How many vibrational normal modes does HCN have? b) How many peaks (not counting the fine structure of each peak) would you expect to see in the IR spectrum of gas phase HCN?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?What is the frequency of green light that has a wavelength of 531 nm? (c = 3.00 x 10⁸ m/s)
- Both spotlights SPOTLIGHT#1 and SPOTLIGHT#2 are place at 20 meters from the stage. You want to produce a circle of light of 1 meter diameter with the SPOTLIGHT#1and a circle of light of 2 meters diameter with the SPOTLIGHT#21 . What is the absorption peak(s) of bromocresol green? Make sure to write down the wavelength at which the absorption peak(s) occur. Include units, please 2.Are the absorption spectrums and peak(s) for methyl orange and bromocresol green the same? Why or why not?What is the absorption peak(s) of methyl orange? Make sure to write down the wavelength at which the absorption peak(s) occur. Include units, please What color(s) does methyl orange absorb the best?
- (a) How much time is needed to measure the kinetic energy of an electron whose speed is 10.0 m/s with an uncertainty of no more than 0.100 percent? How far will the electron have traveled in this period of time? (b) Make the same calculations for a 1.00-g insect whose speed is the same. What do these sets of figures indicate?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.Find the approximate radiation dose (in mSv) for 0.1 Gy exposure to thermal neutrons. (Hint: relative biological effectiveness for various types of radiation can be found in Table 32.2 in the text.) A range of answers is acceptable.
- The magnesium electron spectrum has a line at 266.8 nm. Does it have a greater speed in a vacuum (an area without an atom or particle) than does red light with a wavelength of 652 nm? Why or why not?(I) Why the physicochemical changes in liquid water caused by radiation is the key to understanding the biological effects of radiation? Please give a short, one-sentence explanation. (II) Name the three key stages of the physicochemical changes produced in liquid water due to radiation. (III) Briefly describe the three key stages. A one- or two-sentence explanation for each of the three key stages would be sufficient.Discuss the physical orig ins of the gross selection rules for infrared spectroscopy and vibrational Raman spectroscopy.