5. What is the function of Activator in Scintillation counter? Which type of the activators be used in it to detect different radiations.

Q: Product isoto prs after nuclear de cay Fill up by di fferent K-deca y 92 B-deay Eleckon Caplave…

A: Nuclear reaction: A nuclear reaction must cause a transformation of at least one nuclide to another.…

Q: 50 uL of an aqueous sample of double-stranded DNA is dissolved in 950 uL of water. This diluted…

A: GIVEN Absorbance (A) =0.326 at 260 nm Molar Absorbivity (ε) = 0.020 ng-1mL Wavelenght (λmax ) =260…

Q: m/z 77 m/z 130 m/z 228 m/z 256 m2 185

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the…

Q: In mass spectrometry, alpha cleavages are common in molecules with heteroatoms. Draw the two…

A: Two alpha cleavages in the given molecule is represented as

Q: Write a short note on FAB'"mass spectrometry.

A: mass spectrometry

Q: What is the ratio between H1 nuclei occupying the beta versus alpha states in the 500 MHz Willamette…

A: To Calculate the ratio  between H1 nuclei occupying the beta versus alpha states in the 500 MHz…

Q: A solution of a chemical compound absorbs at 350 nm.  What is the concentration of this chemical…

A:

Q: 12) A 73 m/z peak results from what type of fragmentation for 2-pentanol? C) McLafferty…

A: Elecronic bombardment removes loosely bound non-bonding electron of alcohol to give parent ion which…

Q: m Rel. Intensity Proposed Fragment 14.0 4.8 27 4.7 39 4.2 42 6.7 43 100.0 58 37.0 5679 NMo

A: A question based on mass spectrum that is to be accomplished.

Q: Which of the following formulae is consistent with a molecular ion peak at m/z 73 in a…

A: For given compound, it have odd molecular mass. Thus compound contains odd number of nitrogens i.e…

Q: A sample of chromium absorbs 0.282 at 360 nm, where its concentration was | 0.5 In a sample…

A: Given Wavelength = λ= 360 nm Absorance of Sample= 0.282 = A1Concentration of Sample = 0.5 =…

Q: The biotechnology drug interferon gamma-1b (ACT IMMUNE) contains 100 mcg/0.5 mL. Calculate the…

A:

Q: Arrange the following steps according to the order of process in Mass spectrometry lon Separation…

A:

Q: C,H,Cl, Doublet at 1.70 ppm (3H) Multiplet at 4.32 ppm (1H) Doublet at 5.85 ppm (1H)

A:

Q: Calcelate Acteuatoin everge Tenp CE) 3१२ 451 Rate conschant (M-!s-1) 0,15 こO2333

A:

Q: (b) Protein concentration can also be determined by UV spectrophotometry. (i) Describe the principle…

A: Answer. UV - Visible spectroscopy is an analytical technique used to determine the absorbance of an…

Q: What is the IR and HNMRAndCNMR and mass in this example explain the chemical shift

A: The molecular formula of the experimental molecule is C10H12O. Let’s first find out how many double…

Q: Explain the role of timescale of the experiment and the type of information you get from NMR.

A: role of timescale of the experiment. information what we get from NMR.

Q: Why does methyl orange have a lower pKa value (pKa~3.5) than methyl red (pKa ~5.1)? Provide detailed…

A:

Q: when 59 Cu undergoes position emission, what is the immediate nuclear product?

A: Positron emission reaction: Positron particles are electrons with a positive electric charge.…

Q: The frequency of radiation required to promote a nucleus in the alpha spin state to the beta spin…

A: The frequency of radiation required to promote a nucleus from alpha spin to beta spin state depends…

Q: Give an advantage and a disadvantage of the spectra obtained from an electron impact (El) mass…

A: Answer :

Q: 50 uL of an aqueous sample of double-stranded DNA is dissolved in 950 uL of water. This diluted…

A: GIVEN  Absorbance (A)= 0.326 at 260 nm Molar absorbivity (ε) =0.020 ng-1ml λmax= 260 nm

Q: In an experiment O A. 7.50 O B. 0.775 determine the riboflavin by fluorescence spectrometry, a…

A:

Q: Draw Fragment with m/z of 87 + Draw Fragment m/z of 45

A: Alpha cleavage of alcohol. Path 1 : It gives fragment m/z of 45

Q: Scenario 1. The reaction did not run to completion (not all sm was consur 2. The reaction ran to…

A: Thin layer chromatography (TLC) is the technique which is used to identify the progress of the…

Q: Which of the following fragment peak can you find in the mass spectrum of propan-2-ol but not in…

A:

Q: Absorbance 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Acetic anhydride decay at 250 nm • D20 H20 2000…

A: We would check nature of plot and coordinates of axes to determine order .

Q: In Mass Spectrometry, what high energy particle is responsible is used to bombard molecule so that…

A: We have to predict the energy particles .

Q: What is the most common nucleus to be studies by NMR? Why is this the case? List 4 valid reasons.

A: Every nuclei can not give NMR signals only those nuclei can give valid NMR signals that have non…

Q: What does the imaginary frequency observed for the transition state correspond to?

A: The vibrational spectrum of a transition state is characterized by one imaginary frequency (implying…

Q: Name two advantages of performing a mass spectrometry imaging experiment at high mass resolution…

A: Mass spectrometry is primarily used to: To measure relative molar mass with high precision and then…

Q: Why does methyl orange have a lower pKa value (pKa~3.5) than methyl red (pKa ~5.1)?

A: We are to discuss why pKa value of methyl orange is lower than that of methyl red.

Q: Q1: The concentration of yeast t-RNA in an aqueous solution is 10 M. The absorbance is found to be…

A: Specific absorptivity= 0.0209dm3/mol/cm

Q: Find the binding energy (BE) in MeV of ordinary helium (4He2), for which M=4.002603. Is the reaction…

A: Find the binding energy (BE) in MeV of ordinary helium (4He2)?

Q: The photochemical formation of molecule Z uses a radiation of 300 nm. The sample is irradiated with…

A: It is given that a photochemical formation of Z uses radiation of 300 nm and the sample is…

Q: Tyes 28.94 A a0 Sr activity today is S.76 dpm was calibrated to 1.00Mc, its. im=605 O Calculate how…

A:

Q: Choose the structure below that must have given rise to the FTIR scan pictured below. Note that this…

A: IR Spectroscopy is used to identify the functional groups present in an organic compound.

Q: What is commonly determined using Atomic Spectroscopy? Bodn energy Elemental composition…

A:

Q: 1. DMAP (cat.) THF, rt R. ОМОМ HO 2. Ai203, 60 °C R = (CH2)3OBN

A: The mechanism of the reactions are given below

Q: AG! =-17,9 kJ / moL. what is Keq at 25°C My answer Keq= 1372 %3D

A: Relationship between ∆G and Keq is given as,  ∆ G = - RT ln Keq Therefore, ln Keq = - ∆ G / RT Keq =…

Q: Guanosine has a maximum absorbance of 275 nm. ϵ275= 8400M−1cm−1 and the path length is 1 cm. Using a…

A: The concentration of guanosine is calculated by using Beer’s law. The expression is as follows,

Q: Draw the instrumentation of ATR spectroscopy?

A:

Q: Predict the multiplet you would expect for coupling to two equivalent spin-1 nuclei.

A: Multiplet expected from coupling of 2 equivalent spin 1 nuclei is given by Spin spin coupling can…

Q: 5) Explain eiectron ionization (EI) and fast atom bombardment (FAB) techniques in rnass…

A:

Q: (c) The Mössbauer effect depends upon the recoilness of a y-ray. How important is it to embed the…

A:

Q: m Rel. Intensity Proposed Fragment 15 14.0 26 4.8 27 4.7 4.2 42 6.7 43 100.0 58 37.0 N3445

A: Mass spectral analysis: The peak at 58 m/z is a molecular ion peak because the next peak has less…

Q: When we perform Bradford Assay to measure protein concentration, the spectrophotometer is set  595…

A: Bradford assay: It is used to measure the protein concentration.  Coomassie Brilliant blue-250 dye…

Q: Which fragment correlates to the base peak of the following mass spectrum? 100 10 20 30 40 50 60 70…

A: Base peak: In mass spectrum, the peak with high relative intensity is known as base peak.

Q: Q1-Calculate the neutron separartion energy of the nuclei . Ca and form the following data :…

A: