Please explain: Add 2mL CH2Cl2 to the filtrate.....pentane. why add CH2Cl2? Because high solubility for non-polar compounds? And what's mean by extracts thrice with 7 mL aliquots pentane. Is that mean add three rimes 7mL pentane or totally add 7mL but add three times. Why add pentane?

To a microwave reactor vessel, add a micro stir bead, 1g of ground cloves and 10mL of 50% ethanol (aq) (washing solids down the sides of the tube). Microwave conditions: Ramp rate =10 minutes to 95C, hold 5 minutes Internal temperature =95C IR temperature =85C Allow the mixture to cool over 15 minutes and solids to settle. Using the pipet gravity filtration technique, filter the mixture into a test tube to remove the clove solids. Do not poke glass pipette down Teflon liner. Cleaning of microwave reactor vessel: When you remove the reactor vessel cap, remember to not put it Teflon side down on the countertop! As well, do not scrape the reactor vessels with spatulas or scoopulas. Add 2mL dichloromethane to the filtrate and extract thrice with 7mL aliquots pentane. Dry the organic layer with sodium sulfate. Remove the solvent (there may only be a small amount of product)