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Question

A calorimeter has mass 100g and specific heat 0.1 kcal/kgC. It contains 250gm of liquid at 30C having specific heat of 0.4 kcal/kgC. If we drop a piece of ice of mass 10g at 0C. What will be the temperature of the mixture?

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Solution

Solution
Let the final temperature attained be T. then,
heat given by calorimeter + heat given by liquid
= heat absorbed by ice
MCSC(30T)+MLSL(30T)
=Mi[Lfusion+SW(T0)]
(100)(0.1)(30T)+(250)(0.4)(30T)
=10[80+1(T0)]
(110)(30T)=10[80+T]
33011T=80+T
T=(33080)12=20.83C

1121162_1141849_ans_9e7d7e40cccf4386a8efd2762ebe10e1.jpg

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