Despite the prefix "kilo-", the kilogram is the base unit of mass Current 1889 : The mass of the International prototype kilogram
The original definitions of the various base units in the above table were made by the following authorities:• Current 1889 : The mass of the International prototype kilogram The and , once given special status, are now considered dimensionless derived units

مقياس كمية المادة

Frommer's Puerto Rico 8th ed.

23
مفهوم المول
Even though set up a framework for the use of the metric system in the nineteenth century, the United States continues to use for most purposes apart from and medicine, though as a result of their Spanish heritage, metric units are used widely in
نظام الوحدات الدولي
When the mole is used, the elementary entities must be specified and may be , , , , other particles, or specified groups of such particles
وحدة النظام الأساسية لقياس كمية المادة تسمى..
9747 of the for 1900 January 0 at 12 hours
At the close of the 19th century three different systems of units of measure existed for electrical measurements: a also known as the Gaussian or ESU system , a SI base units :23 Unit name Unit symbol Definition Incomplete m• At the close of the 19th century three different systems of units of measure existed for electrical measurements: a also known as the Gaussian or ESU system , a SI base units :23 Unit name Unit symbol Definition Incomplete m• The and , once given special status, are now considered dimensionless derived units 73 in a of the corresponding to the transition between the 2p 10 and 5d 5 quantum levels of the -86
Online Categorised Metric Conversion Calculator• Interim 1960 : 1 650 763 United Kingdom and the former Empire Logo of the American National Metrication Council, an organization set up by to coordinate the country's transition to the metric system

شارح الدرس: تعريفات وحدات النظام الدولي

Page, Chester H; Vigoureux, Paul, eds.

22
مفهوم المول
Nonetheless, units of mass are named as if the gram were the base unit
وحدة النظام الأساسية لقياس كمية المادة تسمى
March 1976 [First published October 1963]
النظام الدولي للوحدات
Unit names as adjectives In English, a space is recommended between the number and the unit symbol when used as an adjective, e