A piece of iron (specific heat, 0.444 J/g•°C) is added to 168 grams of water (specific heat, 4.184 J/g•°C) in a calorimeter. The water was initially at a temperature of 25.7°C and the iron was initially at 103.9°C. If the final temperature of the system is 31.2°C, what is the mass of the iron? Report your answer with 3 significant figures.

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