Find the final equilibrium temperature when 20.0 g of milk at 10.0°C is added to 160 g of coffee at 90.0°C. (Assume the specific heats of coffee and milk are the same as water and neglect the heat capacity of the container, and cwater = 1.00 cal/g•°C = 4186 J/kg•°C)
a. 85.3°C
c. 71.4°C
b. 81.1°C
d. 66.7°C
B
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