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!

Ca+O2= !

Zn+ =>H2+ !

:

CaO ,ZnO, MgO !

HCL+H2O=> !

CuO+ =>Cu+ !

H2+ =>HCL !

Ag+HCL=> + !

Fe+CL2=> !

+HCL=>ALCL3 + !

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C+O2=>

MgO=>Mg(OH)2

Fe+H2O=> + t