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Species A and B were separated using column chromatography. The elution time for species A (tA) was 200 s with a peak width (wA) of 35 s and the elution time for species B (tB) was 321 s with a peak width (wB) of 35 s. What length (in centimeters) should the column be if the theoretical plate height for species B is 1.0 mm?

Length =

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