Fehler:
Pb3O4 %2B HCl %3D PbCl2 %2B Cl2 %2B H2O
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Unerwartets Zeichen ('%')Pb3O4 %2B HCl %3D PbCl2 %2B Cl2 %2B H2O
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Unerwartets Zeichen ('%')