August 2018 1 17 Report
Ustal współczynniki stechiometryczne w podanych równaniach reakcji. Chemia.
a).....Cr + .... O2 ------ ... CrO3

b) ....Fe + ....O2 ------ Fe2O3

c)....N2 + .... O2 ---- N2O5

Pomóżcie nie umiem chemii :(

zadanie 3 strona 65
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