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9. A soil standard is known to contain 1205ppmPb. What is the expected concentration of Pb (in ppb) in a sample that is prepared by

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9. A soil standard is known to contain 1205ppmPb. What is the expected concentration of Pb (in ppb) in a sample that is prepared by digesting 0.534g of the standard in 15mL concentrated nitric acid with heat, then adding deionized water to this digestate for a total volume of 50.0mL (solution A), then taking 5.00mL of solution A and further diluting to 25.00mL for analysis

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