In early tests with the ligand 2-(2-Thiazolylazo)-p-cresol (TAC), we found that interference of the Fe(TAC) 1 complex may have competed with Fe(TAC) 2 for Fe. Also, i pmax was not reached in UV treated seawater after overnight equilibration ([TAC] = 40 Î¼ m, Î± Fe 3 + (TAC) 2 = 3.6 Ã 10 13).
BASE UNIT - kilogram (kg) - MASS. The standard for the kilogram is a cylinder of platinum-iridium alloy kept by the International Bureau of Weights and Measures in Paris. A duplicate at the National Bureau of Standards serves as the mass standard for the United States.
The best unit to choose is the one that results in the most convenient number. For the weight of a bicycle, you'd probably want to use newtons or pounds. The kilogram, also widely though incorrectly used as a unit of force, might also be convenient.Kilos would work, as would pounds. * * * * Kilos and pounds are OK for mass but mass is not weight. The metric unit for weight is a Newton. The Imperial units would be the pound-force or poundal.