C3 quantitative chemistry

• How do you calculate %mass of an element in a compound

  Ar x number of atoms of that element / Mr of the compound x100
• What is avogadros constant

  6.02 x 10^23
• How do you calculate moles

  Mass/Mr
• Finding masses of products

  
• Balancing equations using reacting masses

  
• How do you calculate volume of gasses

  (Mass / mr ) x24
• What is volume measured in

  Dm^3
• How do you calculate concentration

  Mass or moles / volume
• How do you calculate atom economy

  Mr or desired products / Mr of all reactants x100
• How do you calculate percentage yield

  Mass of product actually made / theoretical mass of product x100