What is meant by the term chemical formula ? Give the names of the compounds represented by the following formulas KNO3 , CaCl2 , Al2(SO4)3 and CaCO3
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A chemical formula is a notation used by scientists to show the number and type of atoms present in a molecule, using the atomic symbols and numerical subscripts. A chemical formula is a simple representation, in writing, of a three dimensional molecule that exists.
(i) Al2(SO4)3
Aluminium sulphate
(ii) CaCl2
Calcium chloride
(iii) K2SO4
Pottasium sulphate
(iv) KNO3
Pottasium nitrate
(v) CaCO3
Calcium carbonate
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