Water is placed into an iron container along with an ice cube. They are thermally isolated. The iron container has a mass of 620. g and is initially at 70.0 degrees Celsius. The water has a mass of 200. g and is initially at 16.0 degrees Celsius. The ice cube has a mass of 86.0 g and is initially at -9.30 degrees Celsius. What is the heat required to bring the iron container AND the water down to 0 degrees Celsius?

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Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.