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