Помогите решить :Fe(OH )3 + 3HNO3 Al2(SO4)3 +NaOH
Al+HBr AlO3+HCl
Fe3O4+H2 Cu2O+C ZnO+HNO2 Fe (OH) 3 + 3HNO3
Al2 (SO4) 3 + NaOH Al + HBr. AlO3 + HCl. Fe3O4 + H2. Cu2O + C ZnO + HNO2
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