IB Chemistry Internal Assessment Exemplar: To what extent do different concentrations [10, 20, 30, 40, 50 (%)] of stearic acid (octadecanoic acid) in mixture with paraffin wax (hentriacontane) affect enthalpy change (ΔH) (kJ/mol) of combustion of candles (each 50 g) measured with use of calorimetry method? | RevisionDojo