in seawater in terms of the conditional stability constants of metal complexes and the corresponding ligand concentration. Based on the conditional stability constants of organic Cu(II) complexes,
In the original version of the metric system the base units could be derived from a specified length (the metre) and the weight [mass] of a specified volume ( 1â7003100000000000000â 1000 of a cubic metre) of pure water.
The kilogram or kilogramme is the base unit of mass in the International System of Units, and is defined as being equal to the mass of the International Prototype of the Kilogram, a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France. It is the only metric base unit which is defined by an artifact. The kilogram was originally defined as the mass of a litre of water at the freezing point. That was an inconvenient quantity to precise