Question 2: Find the molar enthalpy of combustion of ethanol Equipment Uncertainty/magnitude of error Digital balance reads up to 2 decimal places + 0.005 g Thermometer (to 1C) +0.5C Graduated cylinder (to 1 ml) + 0.5 ml A) Volume of water used = 100 = 1.0 ml B) Increase in temperature = 20 = 1.0C C) Mass of ethanol used: Final balance reading 180.15 + 0.01 g Initial balance reading = 200.15 = 0.01 g Calculations