Two species, A and B, are separated on a 2.00 m long column which has 5.000 x 103 plates when the flow rate is 15.0 mL/min. A species that is non-absorbing and known not to interact with the stationary phase, elutes in 30.0 s. Compound A elutes from the column in 5.00 min and Compound B elutes in 12.00 min. calculate the peak widths (in seconds) for Compounds A and B,

Explanation:

The given data is as follows.

          = 30.0 sec,     = 5 min = = 300 sec

          = 12.0 min = = 720 sec

Formula for adjusted retention time is as follows.

                 = 300 sec - 30.0 sec

                 = 270 sec

    = 720 sec - 30 sec

                            = 690 sec

Formula for relative retention () is as follows.

                     =

                     = 2.56

Thus, we can conclude that the relative retention is 2.56.

a. hope i'm right

explanation:

answer: c.

explanation: