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- We calculated that the resonance frequency of an 1H in the presence of an 11.74 tesla magnet was 500MHz, and we later saw that a 13C nucleus resonantes at approximately 125 MHz in this same magnetic field. What is the resonance frequency of a 19F nucleus in the presence of an 11.74 tesla magnet?Explain the concept of Nuclear magnetic resonance spectroscopy ?What frequency (in MHz) is required to cause a proton to flip its spin when it is exposed to a magnetic field of 1 T?
- A molecule absorbs radiation of frequency 3.00x1014 Hz. What is the energy difference between the molecular energy states involved?If a sample is placed in a magnetic field of applied field strength = 1.1 Tesla, the spin-up and spin-down 1H nuclei show an energy difference that corresponds to a photon with frequency = 60 MHz. If this same sample is moved into the vicinity of a magnetic field of strength = 5.5 Tesla, what will be the frequency of a photon that could match the energy difference of the spin-up and spin-down states?Does the absorption spectrum of the diatomic molecule HCl depend on the isotope of chlorine contained in the molecule? Explain your reasoning.
- A rotating diatomic molecule absorbs radiation and has moment of inertia, I, equal to 1.00 x 10-46 kg m², a. which is the frequency of radiation when the molecule undergoes a transition from J = 4 to J=3?What is the threshold frequency ν0 of cesium?The spin quantum number of a nitrogen-14 nucleus isI= 1. What would be the nuclear magnetic resonance spectrum for a proton resonance line that was split by interactionwith (a) two. (b) three equivalent nitrogen-14 nuclei?
- A proton jumps between two sites with δ = 2.7 and δ = 4.8. At what rate of interconversion will the two signals collapse to a single line in a spectrometer operating at 550 MHz?What is the effect of temperature on atomic spectroscopy?The molar absorption coefficient of a solute at 440 nm is 423 dm3 mol−1 cm−1. When light of that wavelength passes through a 6.50 mm cell containing a solution of the solute, 48.3 per cent of the light was absorbed. What is the molar concentration of the solute?