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Question: a 1000g steel sample was analyzed for its cr and...

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3 (20%) A 1.000-g steel sample was analyzed for its Cr and Mn content by dissolving the sample ple nitric acid, adding concentrated sulfuric and phosphoric acids, and the in concentrated made with 0 M H2SO4. Cr and Mn with potassium periodate. Final dilution to 250.0 mL was This solution had absorbances of 0.065 at 440 nm and 0.457 at 545 nm. a. Using the information below, calculate the percentages of cr and Mn in the steel samples. 545 nm 4400 nm Ion 2.32 x 10 99.3 Mno4 7.41 b. What is the purpose of adding the concentrated sulfuric and phosphoric acids to the sample solution?
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