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Sodium bromide, used to produce silver bromide for use in photography, can be prepared as shown in the following equations. How many kilograms of iron are consumed to produce 4.15 × 104 kg NaBr? Fe + Br2 ? FeBr2 FeBr2 + Br2 ? Fe3Br8 (not balanced) Fe3Br8 + Na2CO3 ? NaBr + CO2 + Fe3O4 (not balanced)

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