June 2022 1 5 Report
Расставить коэффициенты (химические уравнения)
C₂H₆ +O₂ = CO₂ + H₂O
ZnS + O₂ = ZnO + SO₂
O₂ + C₂H₂ = CO₂ + H₂O
P₂O₅ + KOH = K₃PO₄ + H₂O

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