Which one of the following statement is wrong? In HPLC apparatus; Choose one answer. Internal diameter of the column determines the efficiency of the separation One of the main components is the gas reservoir Both isocratic and gradient elution can be used Mobile phase is a liquid

Which one of the below statements is wrong regarding the HPLC technique? Choose one answer. Retention time for each component can be obtained High temperature is being utilized The mobile phase is a liquid Is one of the chromatography techniques

2. A reversed-phase HPLC column of dimensions 4.6 mm diameter by 150 mm length is used at a liquid flow rate of 1.0 mL/min. An unretained compound elutes after 0.82 min. A compound with a KOW of 25 takes 2.88 min. to elute when using a mobile phase of 90% water/10% acetonitrile. Assuming the KC is equal to the KOW, calculate the stationary phase volume. A. 0.049 mL B. 0.082 mL C. 0.50 mL D. 1.00 mL E. 1.12 mL

Consider gel-filtration chromatograpy and select the correct statement(s).Question 3Answer1.The larger the volume a particle wanders in, the earlier it elutes.2.The total column volume equals to the sum of the internal bead volume and of the volume between the beads.3.The larger the volume a particle wanders in, the later it elutes.4.The solid phase is composed of porous beads.5.It separates the analyte components according to their size

The diagrams show liquids in containers.Which column of liquid exerts the greatest pressure on the base of its container?Read LessABCD

Which one of the following represents a phase transition from liquid to gas? Group of answer choicesmeltingsublimationcondensationdepositionboiling