9. A 25.0 g piece of aluminum (which has a molar heat capacityof 24.03J/℃mol) is heated to 82.4*C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18J/g℃initially at 22.3C. The final temperature of the water is 24.9℃. Calculate themass of water in the calorimeter.
(A)118 g
(B)6.57g
(C)3180g
(D) 2120g
(E) none of these