AP Chemistry· difficulty 2/5
50.0 g of water at 22.0 °C is mixed with 50.0 g of water at 80.0 °C in a coffee-cup calorimeter. The temperature is recorded vs time.
What is the predicted final temperature?
44.0 °C
58.0 °C
51.0 °C
60.0 °C
Explanation
Equal masses of the same substance: T_f = (T₁ + T₂)/2 = (22 + 80)/2 = 51 °C.
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