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 All hydrogen atoms are attached to carbon resonate at different frequencies depending on their environment. resonate at about the same frequency as carbon have the same resonance frequency are attached to carbon resonate at different frequencies depending on their environment. resonate at about the same frequency as carbon have the same resonance frequency ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy What is used to cool the superconducting coil? Liquid helium Hydrogen Ice Dry ice Liquid helium Hydrogen Ice Dry ice 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
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 wavelength spectrum with the help of frequencies ranges None of these with the help of a mathematical translator called the fourier transfer algorithm with the help of wavelength spectrum with the help of frequencies ranges None of these ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Why is it important to use a deuterated solvent? So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition Expensive solvents work best with NMR They dissolve polymer the fastest NMR uses least of this solvent So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition Expensive solvents work best with NMR They dissolve polymer the fastest NMR uses least of this solvent ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS