An ice cube at an unknown temperature is added to 25.0 g of liquid H2O at 40.0 °C. The final tempera — Thermodynamics Chemistry Question
Question
An ice cube at an unknown temperature is added to 25.0 g of liquid H2O at 40.0 °C. The final temperature of the 29.3 g equilibrated mixture is 21.5 °C. What was the original temperature of the ice cube?
[Cp (J/g•°C) water = 4.184, ice = 2.06, ∆H°fusion = 333 J/g]
A.
–6.5 °C
B.✓ Correct
–13.1 °C
C.
–35.3 °C
D.
–56.8 °C
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