August 2021 0 3 Report
Расставьте коэффициенты и укажите тип химической реакции. 8б 1. Ca + O2 = CaO
2. Fe(OH)3 = Fe2O3 + H2O
3. Al + HCl = AlCl3 + H2
4. H2SO4 + KCl = K2SO4 + HCl
даю 50 баллов!! срочно!!​
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