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According to the chromatography the value of the distance traveled by the solvent is:
Select one:
a. 9.0 cm
b. 11.0 cm
c. 10.0 cm
d. 12.0 cm
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- A method of quantitative determination of the concentration of constituentsof a sample analyzed by gas chromatography is area normalization. Thiscomplete elution of all sample constituents is required. Thearea of each peak is measured and corrected for the detector response to the diffe- renteseluatos. This correction involves dividing the area by an empiricalcorrection factorDetermined. The concen ration of the analyte is found from the ratio between itscorrected and the total corrected area of all peaks. For a chromatogram containing threerelative areas were determined as 16.4; 45,2; and 30.2, in the order ofincreased retention time. Calculate the percentage of each compound if therelative responses from the detector are 0.65, 0.73 and 0.85, respectively.Chromatography involves the separation of two or more compounds/ions caused by their molecular interactions with two phases. True FalseCan paper chromatography be used to separate and identify very volatile substances? Why? Please explain comprehensively.
- In chromatography the concentration of a separated compound is directly related to a) stationary phase concentration b) absorbance c) wavelength d) peak areaDescribe with illustrations the observed peak for a chromatogram with the following tailing factors (TF): a. TF = 1b. TF > 1c. TF < 1Can paper chromatography be used to separate and identify very volatile substances? How do I prove this.
- One disadvantage of thin layer chromatography is that... it cannot be used for quantitative measurements. O it consumes large volumes of solvents O it cannot analyze volatile samples it cannot be used to analyze many samples simultaneously it requires a large amount of sample for analysisGas chromatography cannot analyze mixtures due to the sensitivity of the instrument. True FalseYou have obtained a gas chromatogram of a two component mixture of compounds A and B. The height of peak A is 3.84 cm. and the width at half height is 1 cm. The height of peak B is 3.49 cm. and the width at half height is 1.36 cm. The percentage of a component in the mixture is proportional to peak area. Estimate peak areas by multiplying height by width at half height. What was the percentage of compound B in the mixture? (Enter your answer as a number without any percent symbol or the word percent.)
- What is the relative average deviation in the following percent KHP values in ppt? 46.80% 47.23% 48.03%The following data give the recovery of bromide from spiked samples of vegetable matter, measuredusing a gas–liquid chromatographic method. The same amount of bromide was added to each specimen(Roughan, J.A., Roughan, P.A. and Wilkins, J.P.G., 1983, Analyst, 108: 742).Tomato: 777 790 759 790 770 758 764 ug/gCucumber: 782 773 778 765 789 797 782 ug/g(a) Test whether the recoveries from the two vegetables have variances which differ significantly.(b) Test whether the mean recovery rates differ significantly.Chromatography is based on molecules differing physical properties as a means of separating compound mixtures. Group of answer choices True False