Assertion: metric system's base unit | /r/HasProperty | mole
Facets:
Source sentences:
text: It is an extension of Giorgi's MKSA system; its base units are the meter, kilogram, second, ampere, kelvin, candela and mole.
text: Later, another base unit, the mole, a unit of mass equivalent to Avogadro's number of specified molecules, was added along with several other derived units.