Chemistry, 26.09.2019 19:00, smortandsons
E. a student loaded their mixture of acetylferrocene and diacetylferrocene onto a column using 5 ml of dichloromethane as the loading solvent. they used about 7 g of sio2 as the stationary phase. the student then eluted the column using petroleum ether. after collecting 8 fractions, the student analyzed them by tlc to find that all of the compounds came off in the first two fractions, with no separation. where did the student go wrong, and what should they do differently when they try the column
Answers: 3
Chemistry, 22.06.2019 17:00, Estrella2209
Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness
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Chemistry, 23.06.2019 03:00, kdcloyd3362
Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.
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E. a student loaded their mixture of acetylferrocene and diacetylferrocene onto a column using 5 ml...
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