An insulated container holds 3.0kg of water at 25°C. One kilogram of ice at 0°C is added to the mixture. Calculate the energy needed to bring all the water to 0°C.(Cw= 4.186 J/g°C)
a. 3.15 x10^4 J
b. 3.14 x10^4 J
c. 315 kJ
d. 314 kJ

Pls help :(((