physics help. determine temperature change in the following: 15 kg of water loses 429 kJ of heat energy?

Question

any help would be appreciated

Answer 1

1°C requires 4.184 kJ/kg/°C

15 kg = 15 x 4.184 = 62.76 kJ

429 ÷ 62.76 = 6.84°C Temperature drop.

Answer 2

Fall in temperature=429000/4200 gives 102degree which means if initial temp is 100 degree some water will freeze

Answer 3

429 kJ = 102.3 Kcalories therefore 102.3/15 = 6.82 Degrees C lost.