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QUESTION
Write the formula for iron (III) sulfate. What would this be?
##"Ferric sulfate"## has a formula of ##Fe_2(SO_4)_3##
How did I formulate this? Well, I have ferric ion, ##Fe^(3+)##, and the sulfate ion, ##SO_4^(2-)##.
Clearly the salt is electrically neutral, so I take ##2## of the ferric ion, ##"6 positive charges"##, and ##3## of the sulfate ion, ##"6 negative charges"##.
Capisce?
