How many moles are in 3.555 g of c2h2?

Assume that the variables x and y are inversely related. if k = 18, what is the value of y for each of the following points? be sure and record your data to be used in the following problem.

Based on the position vs. time graph which velocity vs. time graph would correspond to the data

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?