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a 30.00 g piece of iron and a 25.15 g piece of gold at 100.0 degrees celsius were dropped into 830.0mL of water at 27.55 degrees celsius. the molar heat capacities of iron and gold are 25.19J/(mol*degrees celsius) and 25.41 J/(mol*degrees celsius), respectively. what is the final temperature of the water and pieces of metal?

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