Chemistry, 18.02.2021 23:10 nayelirios
13) A yellow compound, dissolved in methylene chloride, is added to a chromatography column. The elution is begun using petroleum ether as the solvent. a) What is petroleum ether? b) After 3 liters of solvent have passed through the column, the yellow band still has not traveled down the column appreciably. What should be done to make the experiment work better?
Answers: 1
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What is the total reduction potential of a cell in which potassium (k) is reduced and copper (cu) is oxidized? a. 2.59 v b. 3.27 v c. -3.27 v d.-2.59 v
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Chemistry, 22.06.2019 10:50
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
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An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it
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13) A yellow compound, dissolved in methylene chloride, is added to a chromatography column. The elu...
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