What can be said about the qualitative and quantitative composition of the following substances according

What can be said about the qualitative and quantitative composition of the following substances according to their chemical formulas? a) FeSO4 b) HCl c) HgO

a) 1 iron atom, 1 sulfur atom and 4 oxygen atoms
b) 1 hydrogen atom, 1 chlorine atom
c) 1 mercury atom, 1 oxygen atom



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