A solution containing 3.47 mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3

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A solution containing 3.47 mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3 473 and 10 222, respectively, in a chromatographic analysis. Then 1.00 mL of 8.47 mM S was added to 5.00 mL of unknown X, and the mixture was diluted to 10.0 mL. This solution gave peak areas of 5428 and 4431 for X and S, respectively.

(a) Calculate the response factor for the analyte.

(b) Find the concentration of S (mM) in the 10.0-mL mixture.

(c) Find the concentration of X (mM) in the 10.0-mL mixture.

(d) Find the concentration of X in the original unknown.

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