The total heat absorbed by the water and the calorimeter can be calculated by adding the heat calculated in steps 3 and 4. the amount of heat released by the reaction is equal to the amount of heat absorbed with the negative sign as this is an exothermic reaction.using the formula ∆h = - (qwater + qcal), calculate the total heat of combustion.
the calorimeter understands to add heat to one of the cells so that the temperature in both cells are always equal. The scanning part comes from the constant