What is the reason of observing excitation light at the emission detector? I. Light scattered by solvent molecules II. Light scattered by particles III. Raman scattering a. I and II b. I and III c. I, II and III d. I and III e. II and III

Q: A student measures the absorbence of an unknown after placing a sample in a cuvette which contained…

A: Given scenario is, A student measures the absorbence of an unknown after placing a sample in a…

Q: hemical shift is related to electron density of the atom. Atoms with a greater electron density are…

A: Spectroscopy is very important for analyzing the compound. In nuclear magnetic resonance (NMR), an…

Q: Why do some line spectra have only a few visible lines while others have so many lines that you…

A: Spectral lines depends upon energy difference between the stationary state (orbit) E2 - E1= hv Where…

Q: Match the spectrophotometry term with its description. describes the relationship between the sample…

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Q: Taking into account that dU= TdS - pdV(fundamental equation), what is true? A. (dT/dp)p = -(dp/dS)S…

A: From the given equation, dU= TdS - pdV(fundamental equation), If V is constant, dV=0

Q: Why is it necessary to run a blank before measuring the absorbance of a sample?       To allow…

A: The absorbance is determined with the help of the amount of light reflected by a substance.

Q: What determines natural line widths for atomic emission and absorption lines? About how broad are…

A: Atomic emission and absorption lines have finite widths because life times of one or both transition…

Q: what are the most common emission methods in spectroscopy

A: Most common methods in spectroscopy  Ultravoilent and visible spectroscopy  fluroscenece…

Q: OSchoology S Schoology Wave v has the greatest frequency. WAVE A WAVE B 4 5 6 7 8. 9. 10 11 POY…

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Q: Chemistry Do the UV-vis and Fluorescence excitation spectra look alike? Why or why not?

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Q: Select true statement about fluorescence spectroscopy of molecules in uv-visible region A. Omission…

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Q: Which of the following describes molar extinction coefficient (ε)? I. ε is an intrinsic property…

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Q: Do the wavelengths (at the highest % transmittance) match to the color of the solution in the…

A: In the highest transmittance, the weave length of the light does not math with color with solutions…

Q: Consider the reaction. Fe)SCN()→ FeSCN) Initially [Fe³+] = 0.00060M, [SCN1, -0.00053M. [FeSCN²+ ] is…

A: We can solve this problem by using beer's law. According to beer's law  A=Ecl Where  A= absorbance…

Q: Absorbance curve or Beer's Law Plot?

A: We are given a curve as follows:

Q: Solve these

A: NOTE : Since you've posted multiple questions,we're solving first question for you. If you want any…

Q: NH2 но, NH2 (d) (e) (f)

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Q: As mentioned in lecture, MRI (magnetic resonance imaging) works with the exact same principles as…

A: HOW MRI WORKS-  The human body is mostly water. Water molecules (H2O) contain hydrogen nuclei…

Q: Which is TRUE for spectroscopy of a mixture? O A. The absorbance for a mixture at a particular…

A: Absorbance is a Additive properties . that is if two compounds absorbance in a perticuler…

Q: When a sample presents some matrix interference, which of the ff. are carried out? Dilute sample to…

A: A question based on analytical process that is to be accomplished.

Q: What is the purpose of the two "slits" between the sample and prism? O to block the emitted light to…

A: The purpose of the two slits between the sample and prism has to be given,

Q: Circle the structure that would have the longest wavelength in the ultravoilet spectrum and box the…

A: Number of conjugation in alkene is directly proportional to the wavelength and inversely…

Q: Which of the following is the function of Flame or Emission system in Atomic Absorption…

A: The function of Flame or Emission system in Atomic Absorption Spectroscopy is to reduce the sample…

Q: 4. The amount of light (or the number of photons) absorbed depends on several factors, including how…

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Q: (i) Identify TWO (2) functional groups presence in the molecule and state their frequencies. (ii)…

A: IR spectra is used to determine the presence of various functional group.  Also, it can predict the…

Q: Write the electronic configuration of Ba (Barium) Select one: a. 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6…

A: Electron are negatively charge particle

Q: a. When the light source is monochromatic, Beer's Law holds true. b. Beer's Law establishes a…

A: The answer is given below

Q: The absorbance for a mixture at a particular wavelength is the sum of the absorbances

A: In this question we have to choose correct Statement for spectroscopy of a mixture with suitable…

Q: You measure that the %T of a sample at 850 nm is 20%. What is the absorbance of this sample? Report…

A: Given Wavelength = 850 nm% T = 20 %Absorbance = To be determined

Q: True or False 1. Photodiode arrays are devices within the instrument that help amplify the signal of…

A: *Photodiode is a semiconductor device that converts light energy into electrical energy through a…

Q: the d3 configuration, answer the questions below: (i) Determine the ground term and name it.

A: Ground state term = 2S+1L 2S + 1 = Spin multiplicity

Q: The absorbance of a mixture at a specified wavelength is the total of the absorbances of each…

A: We have to tell whether the given statement on addit8ve property of absorbance 8s true or false

Q: The ff. statements are true, EXCEPT: 1. If the wavelength is doubled, the energy is halved. II. If…

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Q: Which of the following statements is FALSE? a.) The absorptions in IR are attributed to transitions…

A: The structure of the compound can be determined by using mass, IR, and NMR spectrum. The mass…

Q: (i) Explain how the mass of the particle(s) involved affects the separation between energy levels in…

A: Energy of a particle of mass m in a one dimensional box- En= n2h2/8mL2, n=1,2,3... L is length of…

Q: A student is observing a molecule with electrons that are distributed equally. What type of molecule…

A: If electron are distributed equally so molecule must be symmetarical.hence net dipole moment will be…

Q: 6. Briefly discuss source Zeeman effect as applied for background correction in atomic spectroscopy.

A: Zeeman effect,, in physics and astronomy, the splitting of a spectral line into two or more…

Q: When do you need to blank a spectrophotometer (Spec 20)? After completing all data collection. After…

A: Answer - Before running a set of sample. Spectrophotometer :- Spectrophotometer is tool used…

Q: Why must solutions with high concentrations be diluted prior to analysis via Beer's Law? A. The…

A: Answer= option 1 (the relation between absorbance and concentration not linear at high…

Q: Determine whether an interference pattern is observed on the other side of the slits in experiment.…

A: In this electron does not show the interference pattern because in the presence of light electron…

Q: metal around the sample tube before staining it on the instrument. b) use a metal block to avoid…

A: Correct option is D. When the magnetic moment of an atom is blocked the induced magnetic moment of…

Q: The Beer’s Law plot of the standard curve for the equilibrium experiment was determined by plotting?…

A: The question is based on the concept of lamberts law and jobs method. the concentration of unknown…

Q: What is the effect of temperature on atomic spectroscopy?

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Q: 1) What is Beer-Lambert Law used for in Expt. 7? a) determining absorbances b) determining an…

A: The Beer-Lambert rule asserts that there is a direct relationship within the concentration and that…

Q: what is the relationship between a.)concentration and absorbance b.) concentration and…

A: Relationship between, a)concentration and absorbance, b) concentration and transmittance. (beer's…

Q: Food dye spectroscopy  2. At what wavelengths should the readings be taken? What instrumentation…

A: Dyes are coloured substances so they are generally analysed in the visible region (400 nm to 800…

Q: I need help with these questions: 1. What is transmittance? 2. How is the energy correlated with…

A: 1.  Answer- Transmittance is simply the percentage of light impinging on a solution that passes…