NMR Spectroscopy What is used to cool the superconducting coil? Dry ice Ice Hydrogen Liquid helium Dry ice Ice Hydrogen Liquid helium ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy All hydrogen atoms have the same resonance frequency resonate at different frequencies depending on their environment. are attached to carbon resonate at about the same frequency as carbon have the same resonance frequency resonate at different frequencies depending on their environment. are attached to carbon resonate at about the same frequency as carbon ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy When placed in a magnetic field, all the random spins of the nuclei align with the magnetic field reverse direction rotate to 90° away from the induced field stop align with the magnetic field reverse direction rotate to 90° away from the induced field stop ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy What is shielding in NMR? Blocking parts of a molecule from Rf radiation Using a curved piece of metal to block an opponents attack Putting metal around an Rf source When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei Blocking parts of a molecule from Rf radiation Using a curved piece of metal to block an opponents attack Putting metal around an Rf source When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Why is it important to use a deuterated solvent? NMR uses least of this solvent They dissolve polymer the fastest So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition Expensive solvents work best with NMR NMR uses least of this solvent They dissolve polymer the fastest So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition Expensive solvents work best with NMR ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Better understanding of the nuclei is possible, with the help of wavelength spectrum None of these with the help of frequencies ranges with the help of a mathematical translator called the fourier transfer algorithm with the help of wavelength spectrum None of these with the help of frequencies ranges with the help of a mathematical translator called the fourier transfer algorithm ANSWER DOWNLOAD EXAMIANS APP
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