20. A mixture containing α-tocopheryl acetate and isophytol was separated on a capillary chromatographic column l = 20 m long. the same units of measurement):
a-tocopheryl acetate: l=153; a1/2=2.5;
isophytol: l=61; a1/2=1
Characterize the efficiency of a capillary column by calculating the number of theoretical plates n and the height equivalent to a theoretical plate, HETP.

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