Сложить уровнение реакций
CaCO3 → CaO + CO2
Zn + 02 → ZnO
FeO + HNO3 → Fe(NO3)2 + H20;
Al + CuSO4→Al2(SO4)3 + Cu;
ПЛИИЗ ПРЯМ СЕЙЧАС НУЖНОО​
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