The naturally occurring lactone Sedanenolide is the major contributor to the flavor of celery. Amend the structure below to show the product that would result from hydrolysis with NaOH/H2O, followed by an acidic aqueous workup.

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?

Evaluate this exponential expression,8. (2 + 3)2 – 42

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?