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tlenki metale
tlenki metale
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hnv52gdqgx
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Question
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tlenek potasu
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K2O
tlenek sodu
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Na2O
tlenek wapnia
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CaO
tlenek magnezu
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MgO
tlenek glinu
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Al2O3
tlenek zelaza (III)
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Fe2O3
tlenek zelaza (II)
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FeO
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