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5. In the spectrophotometric analysis of iron, the calibration curve has a slope of 8450AUM1 and an intercept of 0.055AU. If an unknown iron sample

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5. In the spectrophotometric analysis of iron, the calibration curve has a slope of 8450AUM1 and an intercept of 0.055AU. If an unknown iron sample has an absorbance of 0.115AU, what is the concentration of iron in the sample? A) 0.445M B) 7.10106M C) 5.23102M D) 4.71104M

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