September 2018 1 49 Report

Odczytaj co oznaczają następujące symbole i wzory:

3Cu, 2H, 5H2O, 2FeO, 4Fe2O3, 5H2, N2, 5O, 2SO2, 3Fe, P4, S8, S, 3S8, 4P, FeS, 2O2, 3S, As4, Zn /


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