What molecule or particle produced the peaks at 303 and 304 amu?

Q: Co(II) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption…

A: The molarity of Ti(IV) in the unknown solution is to be determined using data provided for atomic…

Q: Calculate the M+1/M+ peak for the hypothetical compound Cz4H2Cls if the M+ pcak is 22.3% Give your…

A: Calculate the M+1/ M+ peak for the hypothetical compound C14H22Cl5 The M+ peak is 22.3 %  Isotope…

Q: 14.69. By how much do Do and De differ in H,S if the vibra- tional frequencies of H,S are 2626,…

A: To calculate the difference in Do and De in H2S if vibrational frequencies of H2S are 2626, 2615 and…

Q: The purpose of the flame in the atomic emission spectroscopy is for I. Vaporization II. Excitation…

A: There is more than one question,and all are different and as per answering guidelines I can answer…

Q: Methyl butanoate mass spectrum was obtained at 70eV. When the electron energy is lowered to a few eV…

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Q: Calculate the mass and linear absorption coefficients of air for CrKα radiation. Assume that air…

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Q: What is the significance of the highest value of absorbance in spectrophotometry?

A: Spectrophotometer is an instrument used in measuring the intensity of light when it is passed…

Q: If two signals differ by 90 Hz in a 300 MHz spectrometer, by how much do they differ in a 500…

A: Chemical shift in ppm is given by, Chemical shift(ppm)=difference in signals(Hz)instruments…

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: Show that 'H nuclei with large chemical shifts relative to TMS have small shielding constants.

A: Chemical shift is also known as position of signal and it is the shift in position of a particular…

Q: The group most likely responsible for the peak at "2" is most likely:

A: Infrared spectroscopy (IR) is a spectroscopic technique used to determine the presence of functional…

Q: A solution with a known concentration equal to 3.4 mM gave an absorbance reading of 0.820 in a…

A: Solution - Absorbance (A), also known as optical density (OD), is the quantity of light absorbed by…

Q: Compare and contrast Flame Emission Spectrophotometry and Atomic Absorption Spectrophotometry

A: In Flame Emission Spectrophotometry we measure the emitted radiation coming out of a sample whereas…

Q: Which of the following statements about proton NMR spectroscopy is FALSE? a. proton nmr requires a…

A: Welcome to bartleby !

Q: Calculate the relative population differences (Nɑ - Nβ)/N for 13C nuclei in fields of (i) 0.50 T,…

A: i) The relative population difference of the nuclei is calculated by the formula shown below:

Q: This is the spectrum for cocaine: 100. 80. 60. 40. 20. 0.0 0.0 50. 100. 150. 200. 250. 300. 350. The…

A: A mass spectrum is an intensity vs. m/z plot of positively charged molecular ion and fragment ions…

Q: Calculate the resolution required to resolve peaks for N2+ (MW = 28.0061) and CO+ (MW = 27.9949)

A: Given data is: Mass of N2+ = 28.0061 and Mass of CO+ = 27.9949

Q: A certain mixture of gasoline obtained from a petroleum refinery plant was found to contain only…

A: Given : Mass of mixture burned = 0.4582 g Mass of CO2 produced = 1.0702 g And mass of PbO produced =…

Q: Describe (quantitatively) the spectrum of the helium ion, He+

A: It’s explained below:

Q: The ultraviolet spectrum of aspirin shows a secondary absorption band at 271 nm. If a solution of…

A: The absorbing species obey Lambert beer law

Q: n analysis of Zn2+ in food sample by atomic absorption spectroscopy gave a calibration curve of A =…

A: Limit of detection  LOD =3.3×Standard deviationSlope of Caliberation curve

Q: Calculate m/z of the 2M++ and M+ peaks for C2H8

A: The given molecule is C2H8 So, Molecular mass of C2H8 = (2 × mass of C) + (8 × mass of H) Molecular…

Q: Bromine has two naturally occuring isotopes, Br-79 and Br-81, approximately 50% of each.…

A: The mass spectrometry is not a true spectroscopic method as it does not involves any electromagnetic…

Q: A chemist was provided with three compounds of A, B and C. The molecular structures of the compounds…

A: (i) When a molecule absorbs a characteristic frequency in the infrared region,a transition can occur…

Q: In a spectrometer operating at 400.130 000 MHz for 1H, on the δ scale what separation of peaks in…

A: Separation between two peaks in part per million (ppm) is known as chemical shift. It is calculated…

Q: What is the %T of a sample with an absorption value of 0.463 at 523 nm

A: Given information: Absorption value = 0.463

Q: The intensities of peaks at 69 m/z, 70 m/z, and 71 m/z are 1.2, 31.2, and 1.7, respectively. How…

A: A mass spectrum is an important tool for the determination of the mass of a compound. A mass…

Q: What is (a) the wavenumber. (b) the wavelength of the radiation used by an FM rad io transmitter…

A: The given data contains, Frequency =88 MHz.

Q: Why is it most accurate to measure absorbances in the range A = 0.3 to 2?

A:

Q: A solution with a known concentration equal to 3.4 mM gave an absorbance reading of 0.820 in a…

A: Given the absorbance corresponding to 3.4 mM concentration = 0.820  So C1 = 3.4 mM and A1 = 0.820

Q: Absorbance at 453 nm 8393939 7 fl. oz./20 ml Beer-Lambert's Law (Spectrophotometry) #1 Fe (aq) +…

A: Solution: Use the Beer Lambert Law and find the slope of the graph;

Q: 4.7x10^-19 J/photon converted to kJ/mol

A: According to the given data, the energy of one photon is = 4.7x10-19 J. According to the Avogadro…

Q: Calculate the relative population differences (Nɑ - Nβ)/N for 1H nuclei in fields of (i) 0.30 T,…

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Q: Elements can be identified by their visible spectra. Could analogous techniques be used to identify…

A: Atom undergoes transition from one stationary state to another stationary state by absorption or…

Q: Predict the relative intensities of the molecular ion peak, the M+2 peak, and the M+4 peak for a…

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Q: In a mass spectrometer, two beams of singly ionized isotopes of uranium 23592U and 23892U are…

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Q: Which of the following is a possible composition for a parent peak in a mass spectrum with m/z of…

A: Interpretation: Which of the following is a possible composition for a parent peak in a mass…

Q: What is could be the calculated lambda max of this compound? O 275 280 285

A:

Q: At a physiological temperature of 37 °C, what is the probability of rhodopsin populating the first…

A: A. Given that : The absorption spectrum of rhodopsin (λ) = 500 nm = (500 x 10-9) m Speed of a photon…

Q: The cadmium solutions were measured at 620 nm by fuorescence emission spectroscopy. Determine the…

A: First, we have to draw a linear regression plot using the given Emission intensity versus…

Q: 200 180 160 140 120 100 80 60 40 20 CDS-43-540 pm

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Q: The molecular ion peak, M at m/z 124 and the relative abundance of M, M+1, and M+2 is 100%, 2.21%,…

A: Given m/z = 124     , intensity (100%)  ( Molar mass of compound) M+1   intensity  =  2.21%  M+2 =…

Q: The organic compound 1,4-dimethylbenzene (also known as p-xylene) has the formula (CH3)2C6H4. Its…

A: Proton NMR is a vital tool available to characterize any known or unknown compounds. It takes into…

Q: You measure that the %T of a sample at 450 nm is 11%. What is the absorbance of this sample?

A: Absorbance or optical density is a logarithmic function of Transmittance. It can be expressed as,  A…

Q: 7. Calculate the expected +1 and M+2 relative intensities assuming M+ has a relative intensity of…

A: The y-axis of a mass spectrum is relative abundance (relative intensity). Calculates how much of an…

Q: An acceleration voltage of 15.0 kV is used to accelerate ions into the 1.48 m flight tube of a…

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

Q: For a nucleus to exhibit an NMR effect, the nuclear spin quantum number I must be? An integer O A…

A: If nucleus contain even atomic number and mass number then this type of nucleus can not be exhibited…

Q: For a quinine solution (exposed to air) vs that of the similar solution which has been bubbled with…

A: Fluorescence: Many compounds absorb ultraviolet or visible light and undergo electronic transition…