May 2022 1 7 Report
Wyrównaj równania reakcji chemicznych: Ca + O2 ---> CaO, Na + O2 ---> Na2O, P + O2 --->P2O5, H2 + Cl2---> HCl, Fe2O3 + H2 --->Fe + H2O, ClO2 ---> Cl2 + O2, S + Cl2 ---> SCl4, CrO3 + C ---> Cr + CO2

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