1. Aluminum has a specific heat of 0.902J/(g ∙ K) , how much heat is lost when a piece of aluminum with a mass of 28.372 g cools from a temperature of 429°C to 22.0°C.
2. A 500 g piece of iron (CP = 25.09 J/(mol · °C) changes 7°C when heat is added. How much heat energy produced this change in temperature?
3.When 300. cal of energy is lost from a 125 g object, the temperature decreases from 45.0°C to 40.0°C. What is the specific heat of this object?
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