How many moles are in 16.0 grams of O2?

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?

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?