Gunpowder's burning rate increases with pressure, so it will burst containers but just burns in the open. Ignition of the powder packed behind a bullet must generate enough pressure to force it from the muzzle at high speed, but not enough to rupture the gun barrel.
The gas constant occurs in the ideal gas law, as follows: where P is the absolute pressure (SI unit pascals), V is the volume of gas (SI unit cubic metres), n is the amount of gas (SI unit moles), m is the mass (SI unit kilograms) contained in V, and T is the thermodynamic temperature (SI unit kelvins).
Combined Gas Law. The combined gas law states that for a closed system (constant moles of gas), the PV product divided by the absolute temperature is constant or P1V1/T1=P2V2/T2. This page provides problems utilizing this relationship. When you press New Problem,a question will appear to the right of the table.