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cum se calculeaza masa moleculara Mg?


Răspuns :

exemplu: MNa2CO3=2xANa+1xAC+3xAo=
=2x23+1x12+3x16=
=46+12+48=106g/mol
A-atomi
Masa moleculara Mg : 1x 24 = 24 , 1 mol Mg = 24 g