Quantitative aspects of chemical change

• Avagardo's Constant

  the number of particles (atoms, molecules, formulaunits)

  present in one mole (NA = 6,023 x 1023 particles∙mol-1 ).
• Molar Mass


  the mass of one mole of a substance measures in (g.mol-1)
• Avogadro's Law


  One mole of any gas occupies the same volume at the same temperature and pressure
• Concentration


  the amount of soloute/litre of soloution
• One Mole

  amount of substance having the same no. of particles as there are atoms in 12 g carbon-12