Ajutati va rog, evaluare finala la chimie clasa 9, mai am 10 minute
DAU COROANA PAJALUSTA
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Răspuns:
Cu+2H2SO4 =>CuSO4 +SO2 +H2O
Zn+H2SO4 =>ZnSO4 +H2
CaCO3 +H2SO4 =>CaSO4 +H2CO3
NaOH +H2SO4 =>Na2SO4 +H2O
CaO +H2SO4 =>CaSO4 +H2O
Răspuns:
Cu+2H₂SO₄ =>CuSO₄ +SO₄ +H₂O
Zn+H₂SO₄ =>ZnSO₄ +H2₂
CaCO₃ +H₂SO₄ =>CaSO₄ +H₂CO₃
NaOH +H₂SO₄ =>Na₂SO₄ +H₂O
CaO +H₂SO₄ =>CaSO₄ +H₂O