Fehler:
H2O2 %2B CaOCl2 %3D H2O %2B O2 %2B CaCl2
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Unerwartets Zeichen ('%')H2O2 %2B CaOCl2 %3D H2O %2B O2 %2B CaCl2
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Unerwartets Zeichen ('%')