November 2021 0 7 Report
Расставьте коэффициенты в окислительно восстановительной реакции. 1) KCl + S = KCl + S02
2) CuO + Al = Al2O3 + Cu
3) Pb02 + Al = Al2O3 + Pb
4) V2O5 + Al = Al2O3 + V
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