What is NOT a safety concern in the extraction of active compounds from the Exce

Question

What is NOT a safety concern in the extraction of active compounds from the Excedrin tablets experiment? A leaking separatory funnel. Recording the weight of recrystallized aspirin hot glassware and flammable solvents being used during the recrystallizations. dichloromethane is toxic and readily absorbed through the skin Which of the following describes the most efficient procedure for extraction of organic compounds from an aqueous solution? One 90-mL extraction with diethyl ether. Three 30-mL extractions with diethyl ether. One 90-mL extraction with acetone. Three 30-mL extractions with acetone Chromatography is used to: Separate two or more compounds based on their polarities. Separate two or more compounds based on their masses. Separate two or more compounds based on how strongly they interact with water. More than one of the above. Approved eye protection devices (such as goggles) are worn in the laboratory to avoid eye strain any time chemicals, heat or glassware are used to protect any contact lenses only if you don't hove corrective glasses Flammable materials, like alcohol, should never be dispensed or used near an open door an open flame another student a sink In the laboratory, the following should not be worn except Loose clothing Dangling jewelry

Explanation / Answer

16. b) Recording the weight of recrystallized aspirin

17. b) three 30 ml extractions with diethyl ether

18. A. Separate two or more compounds based on their polarity

19. b) any time chemicals, heat or glassware are used

20. b) an open flame

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