Расставьте коэффициенты и укажите тип реакций:
H2 + O2 = H2O
Zn + CuCl2 = Cu + ZnCl2
NH3 = N2 + H2
Cu + S = CuS
AgF + NaCl = AgCl¯ + NaF
CaCO3 = CaO + CO2
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