Question: A standard solution containing 6.3 10-8 M iodoacetone and 2.0 10-7 M p dichlorobenzene (an internal standard) gave peak areas of 395 and

A standard solution containing 6.3 × 10-8 M iodoacetone and 2.0 × 10-7 M p dichlorobenzene (an internal standard) gave peak areas of 395 and 787, respectively, in a gas chromatogram. A 3.00-mL unknown solution of iodoacetone was treated with 0.100 mL of 1.6 × 10-5 M p-dichlorobenzene and the mixture was diluted to 10.00 mL. Gas chromatography gave peak areas of 633 and 520 for iodoacetone and p-dichlorobenzene, respectively. Find the concentration of iodoacetone in the 3.00 mL of original unknown.

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