Which of the following has the largest influence on compound polarity during chromatography?
<span>D. Hydrogen bonding, since it is a strong intermolecular force </span>
<span>2. What is the proper sequence of events to follow after eluting a TLC plate? </span>
A. Dry the plate, visualize the plate, develop the plate
<span>3. Safety glasses should be worn </span>
<span>B. at ALL times in the lab, to avoid any accidents that might happen.</span>
<span>4. Disposable gloves are strongly discouraged in the laboratory because </span>
<span>A. aqueous chemicals may pass rapidly through the glove and cause harm to the skin, there are different type of gloves suitable to the substances you are working on</span>
5. If you should get any laboratory chemicals on your skin,
<span>B. wash the affected area immediately with cold water and inform your TA. </span><span> </span>
<span>6. The distribution constant </span>
<span>D. has a characteristic value for a compound in a particular solvent system. </span>
<span>7. What is the most common absorbent in column chromatography? </span>
<span>C. silica gel </span>
<span>8. A compound that moves quickly through a stationary phase will have</span>
D. A large Rf value.
<span>9. Venting a separatory funnel should be done by</span>
<span>A. inverting and then opening the stop wingspan after shaking. </span>
<span>10. Addition of salt during an extraction</span>
<span>E. improves extraction of the compound from the aqueous to the organic phase.</span>
The pronoun here is "me" and it's an object, not a subject (else, it would be "I"). "me" follows "to" actually, which is a preposition,(you could rephrase : to Brendan and to me) so the correct answer is <span>D. object of a preposition
</span>
<span>close-fitting eyeglasses with side shields, for protecting the eyes from glare, dust, water, etc.</span>
<span>D It is a moment of realization.
An epiphany is a moment when someone realizes something in an instant. In the passage it says that "Feld had a sudden insight." The sudden insight is his moment of realization that Sobel had made it clear to Miriam that he loves her.</span>
