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QUESTION
What is the formula for copper ii carbonate?
##"CuCO"_3##
The formula of the carbonate anion: ##"CO"_3^(2-)##
The charge of the carbonate anion: ##2-##
The charge of copper(II): ##2+##
This means that the copper ##2+## ion and the carbonate ion can balance out as a compound.
Therefore, the balanced formula is
##["Cu"^(2+)] ["CO"_3^(2-)] = "CuCO"_3##
