The energy content of a certain food is to be determinedin a bomb calorimeter that contains 5 kg of water byburning a 2-g sample of it in the presence of 100 g of air inthe reaction chamber. If the water temperature rises by 3.2Cwhen equilibrium is established, determine the energy contentof the food, in kJ/kg, by neglecting the thermal energy storedin the reaction chamber and the energy supplied by the mixer. By calculating the rough estimate of the error involved in neglectingthe thermal energy stored in the reaction chamber, do you think it isreasonable to disregard the change in thesensible energy content of the reaction chamber in the analysis?The specific heat of water at room temperature isc= 4.18 kJ/kgC. The constant-volume specificheat of air at room temperature isc_v= 0.718 kJ/kgC.

The energy contentof the food is____ kJ/kg.