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A sample of magnetite (impure Fe,O) weighing 0.4500 g is fused with oxidizing flux and the ferric compound formed is eventually precipitated as ferric hydroxide

A sample of magnetite (impure Fe,O) weighing 0.4500 g is fused with oxidizing flux and the ferric compound formed is eventually precipitated as ferric hydroxide and ignited to ferric oxide (Fe,08 MM 159.70 g/mol) which weighs 0.4890 g

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