Question

- A Calorimeter of mass Gog Contains 180g of was at 390 find temperature of mintune.com 37. 2g if lee at 10.c is added to it.​

Answer 1

Let the final temperature of the mixture be T∘C (Water)

Heat given by calorimeter =60×0.42x(29−T)

Heat given by water = 180×4.2×(29−T)

Total heat given= 180×4.2×(29−T)+6×4.2×(29−T)=186×4.2×(29−T)

Heat absorbed by ice is given by=37.2×2.1×10+37.2×336+37.2×4.2×(T−0)=37.2(21+336+4.2T)

According to principle of mixtures

186×4.2×(29−T)=37.2×(357+4.2T]

⇒781.2×(29−T)=37.2×(357+4.2T)21(29−T)=357+4.2T

⇒609−21T=357+4.2T

⇒252=25.2T

⇒T=10∘C