Calculation Used in Analytical Chemistry

Some Important Units of Measurements :

SI units: Scientists throughout the world have adopted a standardized system of units known as the International System of Units or SI units. The system is based on metric system (such as Mass: kg; Length: m; Time: s; Temperature: K; Amount of substance: mol; Electric current: A etc.). Other units are derived from the base units.

Prefixes are used with the base units and other derived units to express small or large measured quantities in terms of a few simple digits (such as giga: 109; mega: 106; Kilo: 103; deci: 10-1; centi: 10-2: milli: 10-3; micro: 10-6; nano: 10-9; pico: 10-12; femto: 10-15; atto: 10-18 etc.).

The Mole: The mole is the SI unit for the amount of chemical species. The mole is associated with a chemical formula and Avogadro’s number (6.022 x 1023) of particles. The molar mass (M) of a substance is the mass in grams of one mole of the substance. Molar masses are calculated by summing the atomic masses of all the elements appearing in a chemical formula.