1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 J/C. The calorimeter contains 500 g of...

A 0.1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 J/°C. The calorimeter contains 500 g of water and the temperature rise is 1.40°C. Calculate the heat of combustion of magnesium metal in kJ/g.