NMR Spectroscopy What is shielding in NMR? 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 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 ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy What is used to cool the superconducting coil? Liquid helium Hydrogen Dry ice Ice Liquid helium Hydrogen Dry ice Ice ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Better understanding of the nuclei is possible, with the help of a mathematical translator called the fourier transfer algorithm with the help of frequencies ranges None of these with the help of wavelength spectrum with the help of a mathematical translator called the fourier transfer algorithm with the help of frequencies ranges None of these with the help of wavelength spectrum ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Coupling causes the peaks in 1H NMR spectra to be split into two peaks multiple peaks equal to the number of hydrogen on surrounding atoms, plus one multiple peaks equal to the number of surrounding carbon atoms multiple peaks equal to the number of hydrogens on surrounding atoms two peaks multiple peaks equal to the number of hydrogen on surrounding atoms, plus one multiple peaks equal to the number of surrounding carbon atoms multiple peaks equal to the number of hydrogens on surrounding atoms ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Why is it important to use a deuterated solvent? They dissolve polymer the fastest Expensive solvents work best with NMR So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition NMR uses least of this solvent They dissolve polymer the fastest Expensive solvents work best with NMR So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition NMR uses least of this solvent ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy When placed in a magnetic field, all the random spins of the nuclei stop reverse direction rotate to 90° away from the induced field align with the magnetic field stop reverse direction rotate to 90° away from the induced field align with the magnetic field ANSWER DOWNLOAD EXAMIANS APP
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