a. 7. The primary roll of QA/QC specifications are to determine the tailing factor and theoretical plates b. to determine the repeatability of standards and samples to measure the concentration of the sample d. to assure proper preparation of standards and blanks, as well as performance of the instrument c. a. C. 8. You need to perform a separation of a mix of products of a polymer condensation process. The mix contains polymers of various lengths, with molecular weights in the tens of thousands. Which of the LC methods below would be best? size exclusion chromatography b. reverse phase thin layer chromatography ion exchange chromatography d. affinity chromatography 9. Which statement is CORRECT about column bleed? a. The term refers to the elution of compounds produced from degradation of the stationary phase b. A high level of column bleed is desirable c. Keeping the temperature in the column high is a good way to reduce column bleed d. The term refers to the complete removal of the stationary phase from a column by washing it out with a solvent 10. List four chromatographic detections. Give the full name and the common abbreviation for the detector. Also, list if the detector is most commonly used in liquid or gas chromatography