Units of Amount of Substance - Maple Help

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Units of Amount of Substance

Description

• 

Amount of substance is a base dimension in the International System of Units. The SI unit of amount of substance is the mole, which is defined as an amount of a substance that contains as many elementary entities as there are atoms in 12 grams of carbon-12 (14th CGPM, 1971).

• 

When the mole is used, the elementary entities must be specified: atoms, molecules, ions, electrons, other particles, or any specified group of particles. In the Units package, use modifiers and/or attachments in parentheses to indicate the entities.

• 

Maple knows the units of amount of substance listed in the following table.

Name

Symbols

Context

Alternate Spellings

Prefixes

 

 

 

 

 

mole

mol

SI *

moles

SI

  

An asterisk ( * ) indicates the default context, an at sign (@) indicates an abbreviation, and under the prefixes column, SI indicates that the unit takes all SI prefixes, IEC indicates that the unit takes IEC prefixes, and SI+ and SI- indicate that the unit takes only positive and negative SI prefixes, respectively.  Refer to a unit in the Units package by indexing the name or symbol with the context, for example, mole[SI] or mol[SI]; or, if the context is indicated as the default, by using only the unit name or symbol, for example, mole or mol.

  

 

  

The unit of amount of substance is defined as follows.

  

A mole is defined as approximately 6.02213671023 elementary entities.

Examples

convert'mole','dimensions','base'

amount_of_substance

(1)

convert337.29,'units','J''molcarbon12','kg''molcarbon12','energy'

3.75285737410-15

(2)

convert337.29,'units','J''molcarbon12','kg''molcarbon13','energy'

3.75285737410-15

(3)

convert337.29,'units','J''molcarbon12','kg','energy','symbolic'

6.23176501410-39

(4)

See Also

convert/dimensions, convert/units, Units, Units/Index


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