Solid gallium melts at 29.8 °C with an enthalpy of fusion of 5.59 kJ mol-1. The heat capacity of sol — Thermodynamics Chemistry Question
Question
Solid gallium melts at 29.8 °C with an enthalpy of fusion of 5.59 kJ mol-1. The heat capacity of solid gallium is 26.1 J mol-1 K-1 and the heat capacity of liquid gallium is 28.5 J mol-1 K-1. If equal masses of solid gallium at 20.0 °C and liquid gallium at 60.0 °C are mixed in a well-insulated container, what is the temperature after the mixture has attained equilibrium?
A.✓ Correct
29.8 °C
B.
40.0 °C
C.
40.4 °C
D.
40.9 °C
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