A) 58°C
B) 68°C
C) 73°C
D) 78°C
Correct Answer: B
Solution :
Heat lost by hot water = Heat gained by cold water in beaker + Heat absorbed by beaker Þ \[440(92-\theta )=200\times (\theta -20)+20\times (\theta -20)\] Þ \[T=68{}^\circ C\]You need to login to perform this action.
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