A student starts with a 4.25g sample of iron. After heating it in a crucible in air, she obtains 5.47g of oxide compound. What is the empirical formula of the oxide? Show all work

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Problem 6.60QP: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide....
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A student starts with a 4.25g sample of iron. After heating it in a crucible in air, she obtains 5.47g of oxide compound. What is the empirical formula of the oxide? Show all work

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