A piece of hot iron (c = 450 J/kg .°C) of mass 0.500 kg and temperature 120° C is dunked into 2.00 liters of water at room temperature (20.0° C)
a. What is the final temperature of the mix?
b. What is the amount of energy transferred by heat from the iron to the water?
c. What are the entropy changes of the water and of the iron?
d. Show that the 2nd law of thermodynamics is not violated in this process