Ii. Draw a mechanism (i. e. curly arrows) showing the deprotonation of 4-
aminophenol hydrochloride by sodium ethanoate to form 4-aminophenol
(the free base).

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.