Experimental design — practice question

Alcohols can act as fuels for heating water. Plan an experiment to find out whether methanol or ethanol gives out more thermal energy per gram when burned. In your plan, describe how an alcohol burner, as in Fig. 4.1, would be used to heat water. Use water, methanol, ethanol and ordinary laboratory apparatus only; do not use any other chemicals. Fig. 4.1 labels: alcohol burner, alcohol. Your plan should cover: the extra apparatus required; the procedure to follow and the measurements to record; how those measurements are then used to decide which alcohol releases more thermal energy per gram burned. You may include a diagram if that helps.