Zusammenfassung der Ressource
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- Relative molecular mass
- When atoms make
molecules the
mass of the
molecule can be
calculated
- By adding the relative
atomic masses of the
atoms that make the
molecule up
- E.G- PbSO4
- P- 207
- S-32
- O-4
- Mr of PbSO4 is 207+32+(4*16)=303
- Symbol of Mr
- Usually called relative
formula mass when
talking in terms of ionic
compounds
- Relative atomic mass
- Symbol of Ar
- Mass number (Top Number) is
the Mass of the element