20.0-g piece of iron and a 20.0-g piece of gold at 100.0 °C were dropped into the same beaker containing 1.00 L of water at 20.0 °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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