CuSO4 . 5H2O
^
The full stop does not mean`multiply`.It means that the relative molecular mass for 5 water molecular must be added during calculation.
CuSO4 . 5H2O
^
Titik noktah ini tidak bermaksud `darab`.Jisim molekul relatif bagi 5 molekul air mesti di tambah semasa pengiraan.
Rajah hablur kuprum(II) sulfat/ copper(II)sulphate