units of energy

• Joules (J) (1 kilojoule (kJ) is 1000J)
• 1 Calorie = 4.2 Joules
• Energy change

  Q = m c ∆T

  Q = energy in J

  M = mass of water in (g)

  C= Specific heat capacity (4.18)

  T = change in temp
• Energy released per mole = Q%n

  Where:                                                                                     

  Q = Energy

  n = number of moles
• Equipment errors

  ·        The smaller the % error, the more accurate the data.
• Percentage error = error of equipment % amount measured x 100