State Boyle's law.

Explanation

At a given temperature the volume occupied by a fixed mass of a gas is inversely proportional to its pressure.
Mathematically, the Boyle's law can be written as `Valpha(1)/(P)" ".......(1)`
( T and n are fixed, T-temperature, n- number of moles)
`V=kxx(1)/(P)" "......(2)`
k- proportionality constant When we rearrange equation (2).
PV=k at constant temperature and mass