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Question
Sample A containing 100 g of water at 30∘C is mixed with another sample B containing 100 g water at 10∘C. What will be the temperature (T) of the mixture of sample A and B?
Sample A containing 100 g of water at 30∘C is mixed with another sample B containing 100 g water at 10∘C. What will be the temperature (T) of the mixture of sample A and B?
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Solution
The correct option is C 20∘C
Since, the heat lost by the hotter volume of water will be equal to the heat gained by the colder volume of water.
m1c(T−T1)=m2c(T2−T)
0.1×(T−10)=0.1×(30−T)
T=20∘C.
Thus, the temperature of the mixture will be 20∘C.
Since, the heat lost by the hotter volume of water will be equal to the heat gained by the colder volume of water.
m1c(T−T1)=m2c(T2−T)
0.1×(T−10)=0.1×(30−T)
T=20∘C.
Thus, the temperature of the mixture will be 20∘C.
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