4. The following data were obtained during gas chromatographic determination of chloroform using the absolute calibration method:
Amount of chloroform, mg 0.15 0.30 0.45 0.60 0.75
Peak height, mm 15 30 45 60 75
A peak of 50 mm in height was obtained for 0.05 ml of the analyzed solution. Determine the mass fraction of chloroform in the analyzed solution if the density of the solution is 0.25 g/cm3.
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