Question: 1) Why do we have to use special (solvents which contain no protons) solvents for NMR spectroscopy? 2) What is the purpose of the TMS

1) Why do we have to use special (solvents which contain no protons) solvents for NMR spectroscopy? 2) What is the purpose of the TMS or DSS which is added to the NMR solvent? 3) What would you do if your NMR sample contained solid particulate matter (as a contaminant)? 4) Why is it necessary to wipe the bottom of an NMR tube before you place it into the spectrometer? 5) Why do NMR spectrometers spin the tube inside of the magnet? 6) What is "shimming

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