Problem: A 29.75 g piece of iron and a 23.40 g piece of gold at 100.0 °C were dropped into 510.0 mL of water at 26.70 °C. The molar heat capacities of iron and gold are 25.19 J/(mol • °C) and 25.41 J/(mol • °C), respectively. What is the final temperature of the water and pieces of metal?

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A 29.75 g piece of iron and a 23.40 g piece of gold at 100.0 °C were dropped into 510.0 mL of water at 26.70 °C. The molar heat capacities of iron and gold are 25.19 J/(mol • °C) and 25.41 J/(mol • °C), respectively. What is the final temperature of the water and pieces of metal?