volume 
and temperature 
which is obeyed by an ideal gas. [P7.2, P7.5]
is: a relationship between pressure volume and temperature which is obeyed by an ideal gas. [P7.2, P7.5]
sometimes is referred to: as the ideal gas law. [P7.2, P7.5]
is written: as
or 
where 
is the number of moles of gas, 
is the molar gas constant, and 
is the absolute temperature. Equivalently, 
is the number of molecules in the system and 
is Boltzmann's constant. [P7.2, P7.5]
Copyright 1997, The Open University