Какое кол-во энергии выделится поиа охлаждение воды массой 3 кг. От 100 градусов до 0

I got up at 9 o`clock. In my bathroom I washed my hands, face and eared... My kitchen was small. I ate neither porridge nor milk for breakfast. I ate jam and bread. In my living room I sat in an armchair, fairy tales book. In the evening I walked, wrote letters. At 10 o`clock I went to bed.

t1= 100*С , t2 = 0*С , с = 4200 Дж/кг * С . Q = mc(t1- t2) , Q= 100*С умножить на 4200 Дж/кг * С и на 3 кг = 1260кДж