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).
This equation is useful when dealing with gaseous reactions because stoichiometric... show more The ideal gas law PV=nRT, relates pressure P, volume V, temperature T, and number of moles of a gas, n. The gas constant R equals 0.08206 L(atm) /K(mol) or 8.3145 . The equation can be rearranged as follows to solve for n: n=PV/RT. This equation is useful when dealing with gaseous reactions because stoichiometric...