gases

• avogadros number = number of particles in 1 mole
• moles = mass/Mr
• moles = particles / Na
• • Boyle's law
  • pv=constant
  • pump gas to cause pressure and measure volume
• • Charles law
  • V/T = constant
  • heat water and capillary tube and measure the length (volume) of the air bubble
• • pressure law
  • P/T = constant (proportional)
• kinetic theory assumptions

  • random motion
  • no attraction between particles
  • volume of particles is same
  • elastic collisions between particles
  • duration of collision is negligible compared to time between
• n stands for moles and N stands for molecules
• for an ideal gas internal energy is kinetic energy
• isothermal means at a constant temperature
• a higher temperature for Boyle's law means it will have a larger gradient
• isobaric means at a constant pressure
• gradient on experimental gas law graphs is the constant of proportionality between the properties
• temperature for all experimental gas laws is in kelvin
• Molar mass = mass x Na
• compressions = work done on gas
• expansion = work done by gas