Ideal gas law
It states, for a volume containing moles of a gas at pressure and temperature ,
As a result, thus for any fixed number of moles of gas, the quantity is constant.
This equation is relevant to low-density, low-pressure gases. For higher densities, it is necessary to correct this equation. For greater precision, the van der Waals equation is another equation of state which does apply to higher-pressure gases.
If an ideal gas is in a container of dimensions 1 meter, 1 meter, and 2 meters, at a pressure of 100 kPa, and the container is reduced to 1/8th of its former dimensions while keeping the temperature constant, what will the pressure in the container be after reduction?