Specific Heat Problems

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Presentation transcript:

Specific Heat Problems

Example 1 How much energy is required to heat an iron nail with a mass of 7.0g from 25 C until it becomes red hot at 750 C? Specific heat of iron is 0.448 J/g C.

Example #2 If 5750 J of energy are added to a 455 g piece of granite at 24 C. What is the final temperature of the granite? Specific heat of granite is 0.803 J/g C.

Example #3 A 30.0 g block of lead at 90.0 C is dropped into 21.2 g water at 20.0 C in an insulated calorimeter. The final temperature of the system is 22 C. What is the specific heat of the lead?

Example #4 Suppose that 100.0 g of water at 22.4 C is placed in a calorimeter. A 75.25 g sample of aluminum is removed from boiling water at a temperature of 99.3 C and quickly placed in the calorimeter. The substances reach a final temperature of 32.9 C. What is the specific heat of aluminum?