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.
What is the unit of measurement for mass? Full Answer Nonstandard units are typically used when initially introducing young learners to various attributes and concepts involving measurement. These concepts include more of and less than, measuring by laying objects end to end, sorting and classifying into categories according to size, comparing the lengths of two objects by using a third, describing objects in terms of relative size, and ordering objects by length.