Fe(NO3)3+NaOH = Сr(OH)3+H2SO4 =

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Fe(NO3)3: iron (III) nitrate
NaOH: sodium hydroxide
Cr(OH)3: chromium (III) hydroxide
H2SO4: sulfuric acid

The balanced chemical equations for the given reactions are:

Fe(NO3)3 + 3NaOH -> Fe(OH)3 + 3NaNO3
Cr(OH)3 + 3H2SO4 -> Cr(SO4)3 + 3H2O

Overall reaction:
Fe(NO3)3 + 3NaOH + Cr(OH)3 + 3H2SO4 -> Fe(OH)3 + 3NaNO3 + Cr(SO4)3 + 3H2O