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  2. Mole (unit) - Wikipedia

    en.wikipedia.org/wiki/Mole_(unit)

    The Avogadro constant (symbol N A = N 0 /mol) has numerical multiplier given by the Avogadro number with the unit reciprocal mole (mol −1). [2] The ratio n = N/N A is a measure of the amount of substance (with the unit mole). [2] [3] [4]

  3. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...

  4. SI base unit - Wikipedia

    en.wikipedia.org/wiki/SI_base_unit

    The Celsius scale: the Kelvin scale uses the degree Celsius for its unit increment, but is a thermodynamic scale (0 K is absolute zero). Θ mole: mol amount of substance "The mole, symbol mol, is the SI unit of amount of substance. One mole contains exactly 6.022 140 76 × 10 23 elementary entities.

  5. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Amount of substance per unit volume mol⋅m −3: L −3 N: intensive Molar energy: J/mol: Amount of energy present in a system per unit amount of substance J/mol L 2 M T −2 N −1: intensive Molar entropy: S° Entropy per unit amount of substance J/(K⋅mol) L 2 M T −2 Θ −1 N −1: intensive Molar heat capacity: c: Heat capacity of a ...

  6. Metric system - Wikipedia

    en.wikipedia.org/wiki/Metric_system

    Later, another base unit, the mole, a unit of amount of substance equivalent to the Avogadro number number of specified molecules, was added along with several other derived units. [43] The system was promulgated by the General Conference on Weights and Measures (French: Conférence générale des poids et mesures – CGPM) in 1960.

  7. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The original is a unit of energy, equal to the energy in one mole (1 mol) of photons. The second is a unit of amount of photons, equal to one mole (1 mol) of photons. The rayleigh (R) is a unit of photon flux rate density equal to 10 10 m −2 ⋅s −1 (10 4 mm −2 ⋅s −1).

  8. Molar concentration - Wikipedia

    en.wikipedia.org/wiki/Molar_concentration

    Molar concentration or molarity is most commonly expressed in units of moles of solute per litre of solution. [1] For use in broader applications, it is defined as amount of substance of solute per unit volume of solution, or per unit volume available to the species, represented by lowercase : [2]

  9. List of international units - Wikipedia

    en.wikipedia.org/wiki/List_of_international_units

    mole: mol: N: amount of substance: The amount of substance of exactly 6.022 140 76 × 10 23 elementary entities. [n 3] This number is the fixed numerical value of the Avogadro constant, N A, when expressed in the unit mol −1. mol: SI: Physics: Basic: candela: cd: J: luminous intensity