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A.4.1 Determine the molecular mass of a compound from the molecular ion peak IB Chemistry SL

When a molecule goes through a mass spectrometer it will have an electron knocked off and MAY also then be fragmented (snipped in two). If only the electron is removed then a molecular ion (M+) is produced. This will have the highest m/z value on the mass spectrum AND it will also have the same molar mass as the molecule (heck you only removed 1 electron). This of course only works if the charge on the ion (z) is always +1. Luckily the IB assumes it is. Dr Atkinson has ordered a proton gun in the mail to reduce his static cling -- I am worried that he may not drop the charges!
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