December 2018 2 10 Report
Uzupełnij współczynniki stechiometryczne w podanych równaniach reakcji chemicznych:

a) ... Cu + ... S -> ... Cu2S
b) ... H2O -> ... H2 + ... O2
c) ... CuO + ... C -> ... Cu + ... CO2
d) ... Al + ... O2 -> ... Al2O3
e) ... CrO3 + ... C -> ... Cr + ... CO2
f) ... HgO -> ... Hg + ... O2
g) ... Ag2O -> ... Ag + ... O2
h) ... Fe2O3 + ... C -> ... Fe + ... CO2
i) ... Al + ... Cl2 -> ... AlCl3
j) ... K + ... H3PO4 -> ... K3PO4 + ... H2
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