30.0 g H2O at an unknown temperature is mixed with 27.0 g of water at 15.8°C in a coffee-cup calorimeter.If the final temperature of the mixture is 29.1°C,what is the initial temperature of the water?
A) 23.7°C
B) 31.1°C
C) 39.7°C
D) 41.1°C
E) 46.7°C
Correct Answer:
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