5g of ice at −30∘C and 20g of water at 35∘C are mixed together in a calorimeter. The final temperature of the mixture is Neglect heat capacity of the calorimeter, specific heat capacity of ice =0.5calg−1‌∘C−1 and latent heat of fusion of ice =80calg−1 and specific heat capacity of water =1calg−1‌∘C−1 )
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