\begin{array}{|c|c|c|}\hline \text{Công thức chất}&\text{Sửa lại}\\\hline {K(CO_3)_2}&{KCO_3}\\\hline {MgO_2}&{MgO}\\\hline {Ba_2CO_3}&{BaCO_3}\\\hline {Fe_2(SO_4)_3}&\text{Đúng}\\\hline {BaNO_3}&{Ba(NO_3)_2}\\\hline {KH_2PO_4}&{K_2HPO_4}\\\hline {CaPO_4}&{Ca_3(PO_4)_2}\\\hline{FeSO_4}&\text{Đúng}\\\hline{NaHSO_4}&\text{Đúng}\\\hline{MnO_2}&\text{Đúng}\\\hline{KMnO_4}&\text{Đúng}\\\hline{KClO_3}&\text{Đúng}\\\hline{H_2S}&\text{Đúng}\\\hline{H_2NO_3}&{HNO_3}\\\hline{H_2CO_3}&\text{Đúng}\\\hline{Cu(OH)_2}&\text{Đúng}\\\hline{CuCl_2}&\text{Đúng}\\\hline{AlS}&{Al_2S_3}\\\hline{AlCl_3}&\text{Đúng}\\\hline{FeS}&\text{Đúng}\\\hline{HCl}&\text{Đúng}\\\hline{H_2PO_4}&{H_3PO_4}\\\hline{NaHPO_4}&{Na_2HPO_4}\\\hline{CaSO_3}&\text{Đúng}\\\hline{Pb(NO_3)_2}&\text{Đúng}\\\hline{Ag_2O}&\text{Đúng}\\\hline{Cu(NO_3)_2}&\text{Đúng}\\\hline{Mg(OH)_3}&{Mg(OH)_2}\\\hline{MgSO_3}&\text{Đúng}\\\hline{(CH_3COO)_2K}&{CH_3COOK}\\\hline{K_2O}&\text{Đúng}\\\hline{KOH}&\text{Đúng}\\\hline{K_3NO_3}&{HNO_3}\\\hline{(NaNO_3)_2}&{NaNO_3}\\\hline{Al(SO_4)_2}&{Al_2(SO_4)_3}\\\hline{FeO}&\text{Đúng}\\\hline\end{array}

Sửa lại những cái sai :

K(CO3)2 -> K2CO3

MgO2 -> MgO

Ba2CO3 -> BaCO3

BaNO3 -> Ba(NO3)2

CaPO4 -> Ca3(PO4)2

H2NO3 -> HNO3

AlS -> Al2S3

H2PO4 -> H3PO4

NaHPO4 -> Na2HPO4

Mg(OH)3 -> Mg(OH)2

(CH3COO)2K -> CH3COOK

K3NO3 -> KNO3

Na(NO3)2 -> NaNO3

Al(SO4)2 -> Al2(SO4)3

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