Amount of substance

• At room temperature and pressure the volume of one mole of gas is 24dm^3
• Room temperature = 25 degrees Celsius = 298K
• Atmospheric pressure = 1 atm = 100,000 Pa
• The Kelvin scale begins at absolute zero= -273 degrees celcius
• Pressure x volume = number of moles x gas constant x temperature
• P(N/m^2) x v(m^3) = n(mol) x R (8.314) x T (K)
• 1dm= 10cm
• 1dm^3 = 1000cm^3
• 1m^3 = 1000dm^3
• 1m^3 = 1000000cm^3
• Molar volume is a constant value for all ideal gases at the same temperature and pressure.
• The Avogadro's number, 6.022 x 10^23, represents the number of particles (atoms, molecules, ions, etc.) in one mole of a substance.