physico chemical constant concept from the Astronomy knowledge base

Astronomy View all facts Glossary Help

abstraction > mathematical concept > number > constant > fundamental physical constant > physico chemical constant

Next fundamental physical constant: universal constant Up: fundamental physical constant Previous fundamental physical constant: particle constant

physico chemical constant

subject fact

physico chemical constant is a kind of fundamental physical constant 2001-09-27 09:33:10.0

fundamental physical constant has value changes in value are due solely to an increase in measurement accuracy or convention 2001-09-27 09:32:59.0
has accuracy
has unit

Kinds of physico chemical constant :

atomic mass constant (9 facts) (m_u) - One-twelfth the mean mass of an atom of carbon 12 (including the orbital electrons).
Avogadro number (6 facts) (N_A) - The number of atoms in 12 grams of carbon 12. The number of atoms in a gram-atom (mass in grams numerically equal to the atomic weight) or the number of molecules in a gram-molecule (mass in grams numerically equal to the molecular weight).
Boltzmann constant (7 facts) (k) - The constant of proportionality relating the mean kinetic energy of an atom to its absolute temperature.
Faraday constant (5 facts) (F)
first radiation constant (5 facts) (c₁)
Loschmidt constant (11 facts) (n₀) - Number of molecules of an ideal gas per unit volume (2.687 × 10¹⁹ molecules per cm³)., This is the number of molecules in a cubic metre of an ideal gas at s.t.p. It is equal to the Avogadro constant divided by the molar volume. In Germany it is sometimes called Avogadro's constant.
molar gas constant (4 facts) (R)
molar volume of ideal gas (7 facts) (V_m)
Sackur-Tetrode constant (6 facts) (S₀/R)
second radiation constant (5 facts) (c₂)
Stefan-Boltzmann constant (7 facts) (σ) - The constant of proportionality relating the luminosity of a star to its absolute temperature: σ = 5.67 × 10^-5 ergs cm^-2 (deg-K)^-4 s^-1., A constant relating the energy radiated by a black body to its absolute temperature and incorporated in the Stefan-Boltzmann radiation law which states that the energy radiated per unit time is given by σ(T⁴ - T⁴₀), where σ is the Stefan-Boltzmann constant and T and T₀ are the absolute temperatures of the body and its surroundings expressed in kelvins.
Wien displacement law constant (5 facts) (b)

physico chemical constant	is a kind of fundamental physical constant
fundamental physical constant	has value changes in value are due solely to an increase in measurement accuracy or convention
	has accuracy
	has unit