In this lesson we are going to look at, analyse and interpret data from mass spectrometry to calculate relative atomic mass from the relative abundance of isotopes and vice versa. We are also going to understand how mass spectrometry can be used to determine the relative mass of a molecule.
TASK 1. Watch the videos below.
TASK 2: Carefully read the information about mass spectrometry in the resource pack below.
TASK 3: Now calculate the relative atomic mass of the following three elements, using the pictures below.
TASK 4: Now study the mass spectrum of chlorine. In a copy of this spectrum, label the peaks with the ions formed. Or you could write them down on A4 paper.
TASK 5: Now study the mass spectrum of ethanol below. In a copy of the spectrum, or write them down on A4 paper, label the peaks with the ions formed and determine the relative molecular mass.