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Topic: Finding a RANGE in DALTONS using Da and +/- 20 part-per-million (PPM)  (Read 2544 times)

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Offline Damo

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Finding a RANGE in DALTONS using Da and +/- 20 part-per-million (PPM)
« on: February 04, 2010, 05:05:09 AM »
"You measure a peptide at 1345.65 Da with +/- 20 part-per-million (ppm) mass accuracy.  What is the range in Daltons?"

A little help here?  How do you do this math? 
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