A 01946 G Piece of Magnesium Metal Is Burned in a a Constant-Volume

A 0.1946 g piece of magnesium metal is burned in a constant-volume calorimeter that has a heat capacity of 1349 J/ ^$\circ$ C. The calorimeter contains 500. g of water and the temperature rise is 1.40 ^$\circ$ C. Calculate the heat of combustion of magnesium metal in kJ/g, given that the specific heat of water = 4.184 J/g· ^$\circ$ C.

A) 21.8 kJ/g
B) 22.8 kJ/g
C) 23.8 kJ/g
D) 24.8 kJ/g
E) None of the above