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Chapter 4: Calculations Used in Analytical Chemistry

Chapter 4: Calculations Used in Analytical Chemistry 4A Some important units of measurement 4A-1 SI Units SI is the acronym for the French Syst me International d Unit s. The International System of Units (SI) is based on 7 fundamental base units. Numerous other useful units, such as volts, hertz, coulombs, and joules, are derived from these base units. To express small or large measured quantities in terms of a few simple digits, pre-fixes are used with these base units and other derived units. The ngstrom unit is a non-SI unit of length widely used to express the wavelength of very short radiation such as X-rays (1 = nm).

For very dilute solutions, parts per million (ppm) is a convenient way to ... aqueous lead nitrate to produce 1 mole of solid lead iodide and 2 moles of ... Figure 4-2 Flow diagram for making stoichiometric calculations. •4.1, 4.4, 4.7-4.15 (odd)

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