Combined ScienceCode 5129
Relative masses of atoms and molecules
What this topic asks you to be able to do
- Define relative molecular mass, Mr, as the total of the relative atomic masses; with ionic compounds, the quantity used is relative formula mass, Mr.
- Find the value of relative molecular mass together with relative formula mass.
- Calculate stoichiometric reacting masses
- Work out concentration, taken as the mass of solute that is dissolved within a particular volume of solution and measured in g/dm3
- Use balances, volumetric flasks and volumetric pipettes to make up a solution whose concentration is known