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Heat capacity and calorimetry


A 20.g iron rod is heated to a temperature T1 and then dropped into 20.g of water at a lower temperature T2 in a polystyrene cup.
Which of the following is true of the final temperature of the system when thermal equilibrium is reached? (The specific heat of iron is 0.45J/(g°C), and the specific heat of water is 4.2J/(g°C).)
Choose 1 answer: