Fe + 2HCl =>FeCl2 + H2↑
K2SiO3 + 2HCl => 2KCl + SiO2 + H2O
CaO + 2HCl=> CaCl2 + H2O
Ответ: Fe; K2SiO3; CaO
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Verified answer
Fe + 2HCl =>FeCl2 + H2↑
K2SiO3 + 2HCl => 2KCl + SiO2 + H2O
CaO + 2HCl=> CaCl2 + H2O
Ответ: Fe; K2SiO3; CaO