NMR Spectroscopy Coupling causes the peaks in 1H NMR spectra to be split into multiple peaks equal to the number of surrounding carbon atoms multiple peaks equal to the number of hydrogens on surrounding atoms multiple peaks equal to the number of hydrogen on surrounding atoms, plus one two peaks multiple peaks equal to the number of surrounding carbon atoms multiple peaks equal to the number of hydrogens on surrounding atoms multiple peaks equal to the number of hydrogen on surrounding atoms, plus one two peaks 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 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 ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy What is used to cool the superconducting coil? Ice Liquid helium Dry ice Hydrogen Ice Liquid helium Dry ice Hydrogen ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy All hydrogen atoms resonate at different frequencies depending on their environment. are attached to carbon have the same resonance frequency resonate at about the same frequency as carbon resonate at different frequencies depending on their environment. are attached to carbon have the same resonance frequency 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 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 ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy What is shielding in NMR? 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 When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei Putting metal around an Rf source ANSWER DOWNLOAD EXAMIANS APP
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