put some alcohol into a spirit burner and measure the mass of bruner using a mass balance
measure 100cm3 of distill water into a copper calormiter and insulate it with a draught excluder,cover with an insulating led
put burner under calorimeter and light ut
stir water using themometer and continue until the heat has reached above 20c
reweigh and repeat with different alcohols but make sure the height of the container abover the burner and the volume and water is the same and the moles of the alchohol
why might the actual temperature change be less than the theoretical
