The efficiency of a gas chromatography column is measured by a parameter called plate height (H, mm) which is related to the gas flow rate (u, mL/min) by the van Deemter equation: H = A + B/u + Cu, where A, B, and C are constants. Prepare a spreadsheet with a graph showing values of H as a function of u for u = 4, 6, 8, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100 mL/min. Use the values A = 1.65 mm, B = 25.8 mm mL/min, and C = 0.023 6 mm = min/mL.