9. Hydroboration-Oxidation of Alkenes

this washing procedure with one additional 0.5 mL portion of brine. Prepare a sodium sulfate drying column (a small pipet plugged with a wad of cotton followed by the addition of 0.5 cm of sand and 3 cm of anhydrous Na 2SO 4). Transfer your organic layer to the drying column and collect the dried solution in a pre-weighed conical vial.

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Introduction Acetyl salicylic acid, commonly known as aspirin, is one of the most common synthetic medicines. ... These washing steps had to be performed quickly to minimize the loss of aspirin due to its solubility in water. ... crystals were in the oven, a clean, dry vial was appropriately. This vial was weighed on a top load balance, and the ...

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Expt 9: The Aldol Condensation - Towson University

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solids in the vial with a microspatula to make them easier to transfer. Pour the contents of the vial onto the Hirsch funnel and filter the solid. 9. To ensure complete transfer of all the solids into the Hirsch funnel, wash out the conical vial twice, using two 3 mL portions of DI water, transferring all washings into the Hirsch funnel each time.

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Infection Control/ Bloodborne Pathogens

nt.prophecyhealth.com

hand-washing guidelines and maintain a sterile field). Never administer medications from the same syringe to more than one patient, even if the needle is changed. Never enter a vial with a used syringe or needle. Do not use medications packaged as single-dose or single-use for more than one patient.

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tuberculin skin test

www.cdc.gov

Invert the vial while keeping a firm hold on the syringe and plunger. The tip of the needle should be below the fluid level in the vial. Pull back on the plunger and draw out slightly more than the one tenth of a milliliter needed for the test. Remove the needle from the vial. Hold the syringe in an upright position, then draw back slightly on

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www.nrcs.usda.gov

The vial will contain a 1:1 ratio of soil to water, on a volume basis. 3. Tightly cap vial and shake 25 times. Let the sample settle for 1 minute. Remove cap and decant 1/16inch of soil-water solution carefully into lid. Let sample sit in the lid for 2 to 3 minutes. 4. Take the end of a 1-inch-long piece of pH paper ...

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to the funnel. (This process is called “washing”.) The NaOH removes any trace of acid that may have co-distilled with the product. The aqueous layer is carefully removed, leaving the product in the funnel. The “wet” product is then transferred to a …

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