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A 1H NMR signal is observed at 105.0 Hz (downfield of TMS) on a 1.50 ×...

A 1H NMR signal is observed at 105.0 Hz (downfield of TMS) on a 1.50 × 102-MHz instrument. a) What is the observed chemical shift in parts per million (ppm)? b) What is the chemical shift, in parts per million (ppm), if the sample is analyzed with a 200.0-MHz instrument? c) Where will the proton signal appear, in hertz, if the sample is analyzed with a 200.0-MHz instrument?

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