1.

Which of the following equations give the expression for plate number, N when tR is the adjusted retention time and Wb is the width at the base of the peak which is equal to 4 standard deviations.

A. 16 t<sub>R</sub><sup>2</sup>/W<sub>b</sub>
B. 4 t<sub>R</sub><sup>2</sup>/W<sub>b</sub>
C. (4t<sub>R</sub>/W<sub>b</sub>)<sup>2</sup>
D. 4 (t<sub>R</sub>/W<sub>b</sub>)<sup>2</sup>
Answer» D. 4 (t<sub>R</sub>/W<sub>b</sub>)<sup>2</sup>


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