(a) Enthalpy change when one mole of a substance burns completely in oxygen
Allow heat energy change / allow fully combust
1
With all substances in their standard states (at stated temperature and 100kPa)
1
(b) q = m c ∆T = 150 × 4.18 × 13.9 = 8715.3 J
1
n(propan-1-ol)= 
= 0.00828 mol
1
∆H = 
= −1050 kJ mol-1
M3 = – M1×10–3/M2
Minimum of 2 sf needed
Must be negative
1
(c) Incomplete combustion
Evaporation of fuel
Experiment not completed under standard conditions
1
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