amounts of substance

    Cards (11)

    • ionic equations
      show the ions formed in solution and which particles are reacting
    • the mole - avogadro constant
      6.02 x 10^23
    • Number of particles
      avogadros number x number of moles
    • the mole - mass and mr
      mass(g) / mr
    • the mole -solutions
      number of moles = conc(moldm-3) x volume (dm3)
    • moles ideal gas equation
      Pv=nRT
      p= pressure (pa)
      v = volume (m3)
      n = moles
      r= gas constant (8.314 jk-1mol-1)
      T = temp (k)
    • converting units
      m--> dm ---> cm - 1d
      x10 x10

      m2 ----> dm2 ---> cm2 - area
      x100 x100
      m3 -----> dm3 ------> cm3 ------> - volume
      x1000 x1000 x1000
    • emperical formula
      simplest whole number ratio of element in a compound
    • Percentage yeild formula
      actual yield/theoretical yield x 100
      yield is never 100%
    • theoretical yield
      amount of products produced assuming no products are lost and all reactants react fully
    • Atom economy
      how efficient a reaction is
      molecular mass of desired products ////
      sum of molecular masses of all products
      - takes into account big number
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