NMR Spectroscopy
Coupling causes the peaks in 1H NMR spectra to be split into

multiple peaks equal to the number of hydrogen on surrounding atoms, plus one
two peaks
multiple peaks equal to the number of hydrogens on surrounding atoms
multiple peaks equal to the number of surrounding carbon atoms

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NMR Spectroscopy
Why is it important to use a deuterated solvent?

Expensive solvents work best with NMR
So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition
They dissolve polymer the fastest
NMR uses least of this solvent

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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
Putting metal around an Rf source
When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei

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