Составьте уравнения, уравняйте и определите тип химической реакции:

Na2O + SO3 =
W + O2 =
PbO + CO2 =
Ag + H2O =
HgS –›
Na + H2S =
Sn(OH)4 –›
K + HCL =

Cпасибо.
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