Chemistry
Chemistry, 13.10.2019 14:20, rendaescamilla

Why do chemical compounds dissolve more quickly in hot solvent than in cold solvent?

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Chemistry, 26.07.2019 00:00, ofuber
How does the polarity of the solute affect how well a solvent will dissolve? it allows the solvent to absorb more heat it has no effect the freezing point of the solvent will increase the solute will ionize more completely within the solvent similar polarity makes the solvent more likely to dissolve?
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Chemistry, 19.09.2019 07:20, samtrevino9921
What does it mean for a substance to dissolve? a. it drops into the solvent. b. it floats in the solvent. c. it is absorbed into the solvent. d. it gets bigger in the solvent.
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Chemistry, 16.10.2019 02:30, alialbinn6969
Which of the following statements is true when considering temperature during a recrystallization? more than one answer may be correct. it is important that the sample is dissolved in just enough hot solvent. ideally the hot solvent used will keep the impurities dissolved or not dissolve them at all. using ice to cool the sample will speed up the crystallization process so that large crystals will be formed. enough cold solvent should be added to dissolve the sample before heating it past its boiling point.
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Chemistry, 19.10.2019 00:20, Luzperez09
Suppose that a tlc plate is spotted with samples 1.0 cm above the bottom of the plate. select the consequence of inserting the plate into a developing chamber containing a pool of developing solvent that is 1.2 cm deep (a) the compounds in the samples will leach into the pool of developing solvent resulting in poor resolution. (b)the pencil marks will dissolve into the developing solvent. (c)the increased capillary action will cause the compounds to migrate up the plate more quickly. (d)the increased depth of developing solvent will result in better resolution of the compounds in each sample.
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