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A food product is being frozen in a system capable of
removing 6000 kJ of thermal energy. The product has a specific
heat of 4 kJ/(kg °C) above the freezing temperature of – 2°C,
the latent heat of fusion equals 275 kJ/kg, and the frozen
product has a specific heat of 2.5 kJ/(kg°C) below – 2°C. If
10 kg of product enters the system at 10°C, determine the exit
temperature of the product.

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