Ultra high-performance liquid chromatography (uhplc) uses sub 2.0 μm diameter particles and pressures up to 100 mpa to achieve increased resolution or decrease the run time while maintaining adequate resolution. when run on a 50.0-mm-long × 3.0-mm-diameter phenyl uhplc column, a compound has a retention time of 0.560 min and a width at half height of 2.02 s. calculate the number of theoretical plates, n, and the plate height, h, for this column under the given conditions.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.