ПОМОГИТЕ ПЖ
12) Fep03 + H2 - Fe + H20
13) CaCl) + NaOH – Ca(OH) 2 + NaCl;
14)_H2 + 02 - H20;
15) Zn + CuCl2 - Cu + ZnCl2;
16) NH3 - N2 + H2 ;
17) Cu + S – CuS ,
18) AgF + NaCl – AgCl + NaF;
19) CaCO3– Ca0 + CO2;
20) CuBr2 + NaOH – Cu(OH)2 + NaBr;
21) Fe + H20 – H2 + Fep03 .

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