November 2021 1 31 Report
3. Позначте рядки речовин з ковалентним полярним типом хімічного зв’язку:
H₂S; SO₂; Н₂SO₄
H₂SO₄; SO₃; Na₂SO₄
Na₂S; H₂SO₃; Na₂SO₃
K₂S; MgSO₃; CaSO₄
Al₂О₃: H₂S; MgО
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