What law can be used to calculate the number of moles of a contained gas?
The Ideal Gas Law or Avagadro's Law
The Ideal Gas Law (PV = nRT) can be used if you have pressure, volume, and temperature. Where...
...P = Pressure in kPa
...V = Volume in
...n = The number of moles of gas present
...R = Universal Gas Constant (
...T = The temperature in Kelvin
If you don't have those pieces of information, perhaps Avagadro's Law will take care of you. It says that 1 mole of any gas at standard temperature and pressure will occupy