Empirical and molecular formulae, finding formulae

• what is the empirical formula ?

  The simplest whole number ratio of atoms in a compound
• what is the molecular formula ?

  the number and types of atoms in a molecule.
• if the molecular formula of a compound is C2H6 then what is the empirical formula ?

  CH3
• what are the two experiments to help you find the empirical formula ?

  • combustion
  • reduction