Cu+H2SO4 ->

2Ca+Al(NO3)3 ->

Hg+Pb(NO3)2->

 

2HCl+CaSO4->

2NaCl+ZnSO4->

 

2Fe(OH)3->

2CO+O2->

2SO3->

 

 8 класс, помогите пожалуйста очень надо!!!!!!

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