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 Using a curved piece of metal to block an opponents attack Putting metal around an Rf source Blocking parts of a molecule from Rf radiation When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei Using a curved piece of metal to block an opponents attack Putting metal around an Rf source ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy What is used to cool the superconducting coil? Dry ice Ice Liquid helium Hydrogen Dry ice Ice Liquid helium Hydrogen 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
NMR Spectroscopy All hydrogen atoms 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 resonate at different frequencies depending on their environment. ANSWER DOWNLOAD EXAMIANS APP
NMR Spectroscopy Coupling causes the peaks in 1H NMR spectra to be split into 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 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 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
EXAMIANS