7. Fe elementinin oksitlerinin formülleri sırasıyla FeO, Fe₂O tür. Bu oksitlerde 12'şer gram oksijen elementine kar- şılık gelen Fe elementinin kütleleri aşağıdakilerden hangisidir? (Fe= 56 g/mol, O= 16 g/mol) A) B) C) D) E) FeO 42 42 42 28 28 Fe₂O3 56 28 14 16 14
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