Physics: Temperature Conversions and Heat Calculations



Chemistry Name_______________________

Specific Heat Calculations

*Use the table of specific heats from your notes to solve the following problems. Show all work, round answers to the correct number of significant digits, and label answers with the correct unit. Make sure the units for mass and specific heat match. Both must be either in grams or both in kilograms.

What is the formula for specific heat?

1. Calculate the amount of heat required to raise the temperature of 78.2 g of water from 10.0oC to 35.0oC. The specific heat of water is 4.18 J/goC .

2. Calculate the amount of heat required to raise the temperature of 22.1 g of aluminum from 27.0oC to 65.5oC.

3. How much heat must be removed from 15.5 g of water at 90.0oC to cool it to 43.2oC?

4. A 90.0 g sample of an unknown metal absorbed 25.6 J of heat as its temperature increased

1.18oC. What is the specific heat of the metal?

5. The temperature of a sample of water increases from 20.0oC to 46.6oC as it absorbs 5650 J of heat. What is the mass of the sample?

6. If 335 g of water at 65.5oC loses 9750 J of heat, what is the final temperature of the water?

7. A breakfast of cereal, orange juice, and milk might contain 230 dietary Calories. Express this energy in joules.

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download