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Empirical formula of a oxide of iron which has 69.9%iron and 30.1%dioxygen by mass |
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Answer» 100 g of the compound CONTAINS 69.9 g iron and 30.1 g oxygen. The atomic masses of iron and oxygen are 55.85 amu and 16.00 amu. The number of moles of Fe present in 100 g of compound are 55.85 69.9 =1.25 The number of moles of O present in 100 g of compound are 16.00 30.1 =1.88 The MOLE ratio of Fe to O is 1.88 1.25 =0.67:1 or 2:3 Hence, the empirical formula is Fe 2 O 3 mark as BRAINIEST :) |
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