(a) The 'H NMR signal for bromoform (CHBr3) appears at 2065 Hz from TMS when recorded on a 300- MHz NMR spectrometer. (i) What is the chemical shift of this proton? (ii) At what position (in Hz) from TMS the signal will appear when a 500-MHz NMR spectrometer is used? (iii) What will be the chemical shift of this proton on a 500 MHz NMR spectrometer?

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