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51问答网 > 960千克三氧化二铁（Fe2O3）与多少千克四氧化三铁（Fe3O4）含有相同质量的铁元素

960千克三氧化二铁（Fe2O3）与多少千克四氧化三铁（Fe3O4）含有相同质量的铁元素

2025-03-15 10:12:20

推荐回答（1个）

回答1：

三氧化二铁中铁元素的质量分数=

56×2

56×2+16×3

×100%=70%；
四氧化三铁中铁元素的质量分数=

56×3

56×3+16×4

×100%≈72.4%；
960kg×70%÷72.4%≈928.2kg．
答：960千克三氧化二铁（Fe₂O₃）与928.2千克四氧化三铁（Fe₃O₄）含有相同质量的铁元素．

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