What is the definition of a reflux? What happens to the solvent during a reflux experiment? What are three characteristics of a "good" solvent to use for refluxing? You are asked to reflux a solution for one hour. At what point does the reflux time start? What is the temperature of the solution during the reflux? Should you report a melting point as a single number or a range? How are the high and low endpoints of the range determined experimentally during the melting point experiment? What is the relationship between the purity of a compound and its melting point range? Briefly describe how a rotary evaporator works. What is likely to happen if cooling water is not run through the condenser when solvent is vaporized using a rotary evaporator? That is, where is the solvent likely to end up?
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Chemistry, 22.06.2019 14:50, alexabbarker9781
How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.
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Chemistry, 22.06.2019 18:00, kamjay2006
The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.
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What is the definition of a reflux? What happens to the solvent during a reflux experiment? What are...
Mathematics, 12.02.2020 02:57
Mathematics, 12.02.2020 02:57