Given, sw=1 cal g−1‌∘C−1 ‌s‌ice ‌=0.5‌cal‌g−1‌‌∘‌C−1 ‌Lf=80‌cal‌g−1 Mass of ice, m‌qce ‌=5g Mass of water, mw=20g Let final temperature of the mixture be T∘C. According to principle of calorimetry, Heat lost by water = Heat gained by ice