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Masses of atoms and molecules

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GCSE C2 Mapa Mental sobre Masses of atoms and molecules, criado por danielberthaur em 19-11-2013.
danielberthaur
Mapa Mental por danielberthaur, atualizado more than 1 year ago
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Criado por danielberthaur mais de 10 anos atrás
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  1. Relative molecular mass
    1. When atoms make molecules the mass of the molecule can be calculated
      1. By adding the relative atomic masses of the atoms that make the molecule up
        1. E.G- PbSO4
          1. P- 207
            1. S-32
              1. O-4
                1. Mr of PbSO4 is 207+32+(4*16)=303
                2. Symbol of Mr
                  1. Usually called relative formula mass when talking in terms of ionic compounds
                  2. Relative atomic mass
                    1. Symbol of Ar
                      1. Mass number (Top Number) is the Mass of the element

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