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THE IDEAL GAS LAW
P = nkT (pressure = number density * a constant * temperature) PV = NRT (pressure * volume = number of moles * a constant * temperature) These two equations are different versions of the Ideal Gas Law, which relates the pressure, volume, density and temperature of gaseous matter in a given container or environment. R and k are constants of proportionality. "Number density" is given in units of number of particles (e.g. gas molecules) in a given volume. Remember that temperature must be given in Kelvin - that is, a temperature scale where zero degrees is absolute zero. Remember that one mole = 6.023 * 10^23 (for most calculations, 6 * 10^23 is close enough). At standard temperature and pressure (S.T.P.), one mole of gas particles occupies a volume of 22.4 liters (that is, 22400 cubic cm or 0.0224 cubic meter). [more text TK] |