Examole (Emol) – Definition, Conversion & Uses
The examole (symbol: Emol) is an SI unit of amount of substance equal to 1018 moles. It uses the SI prefix exa-, which denotes a factor of one quintillion (1018). The examole provides a practical way to represent extremely large quantities of matter while following the International System of Units (SI).
What Is an Examole?
An examole is a unit of amount of substance equal to 1018 moles. It is one thousand petamoles and one-thousandth of a zettamole.
The examole simplifies the expression of enormous quantities of atoms, molecules, ions, or other particles that would otherwise require very large numerical values in moles.
History of the Examole
The SI prefix exa- was officially adopted by the General Conference on Weights and Measures (CGPM) in 1975. It became part of the International System of Units (SI) to provide standardized names for extremely large multiples of base units. The examole follows the same SI naming convention as other prefixed mole units.
Current Uses of the Examole
The examole is primarily used in theoretical chemistry, physics, astronomy, cosmology, and scientific research involving exceptionally large quantities of matter. Although it is rarely used in routine laboratory work, it offers a standardized SI unit for expressing very large amounts of substance.
Examole Conversion
One examole is equal to:
- 1 × 1018 moles (mol)
- 1,000 petamoles (Pmol)
- 0.001 zettamole (Zmol)
- 1 × 1015 kilomoles (kmol)
You can use ChangeUnit to convert examole to mole, petamole, zettamole, and many other amount of substance units.