m | mass | kg |

n | amount of substance | mol |

V | volume | m^{3} |

z | count | 1 |

Concentration-like physical quotient quantities built up on the base above

Example: oxygen-nitrogen gas mixture (O and N)

quantity | equation | quantity | equation | unit |

w_{B} mass fraction |
mass ratio | |||

j_{B} volume fraction |
volume ratio | |||

x_{B} amount-of-substance fraction |
rB amount-of-substance ratio | |||

molecular fraction | molecular ratio | |||

range of the function | 0-1 | 0-endless |

The mole ratio is equal to the molecule ratio because of the Avogadro's Law and the definition of the mole unit.

The "unit one" is under dispute at a commission of the Bureau Internationale des Poids et Measures & and doesn't seem usable for countable quantities.

ratio: quantity of one component divided by the other component (the
solvent)

fraction: quantity of one component divided by the whole mixture

Notice that the unit "percent" can be undestood in eight different meanings and different values.

The number of millet divided by the number of the whole mixture (millet plus wheat) is not equal to its molecule ratio. I can not name it. Count ratio?

Quantities divided by the volume of the mixture (they are called concentration)

mass | mass concentration | ||

amount of substance | amount-of-substance concentration | ||

volume volume fraction | volume fraction | ||

number, entity, count | molecular concentration |

Oxygen content of the normal air (is it 21 percent, less or more?)

volume fraction | j_{O} |
0.2093 | |

mass fraction | w_{O} |
0.232 | |

amount-of-substance fraction | x_{O} |
0.2117 | |

amount-of-substance ratio (for nitrogen) | r_{O} |
0.2178 | |

mass concentration | r_{O} |
0.3 |

Created by János Zana