Specific Heat Worksheet - Yola



Chemistry Chapter 2

Miss Hwang

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Specific Heat Worksheet

Specific heat of a substance is the quantity of energy as heat that must be transferred to raise the temperature of 1g of a substance by 1K. Specific heat is expressed in joules per gram Kelvin. (J/g∙K)

q = mCsp∆T

q = amount of heat needed

m = mass of the substance

Csp = specific heat

∆T = change in temperature Tf - Ti

SHOW ALL YOUR WORK!

1. List the givens

2. Write the equation

3. derive the equation

4. plug in the numbers with the correct units

1. Determine the specific heat of a material if a 35g sample of the material absorbs 48J as it is heated from 298K to 313K. (Ans: 0.091 J/g∙K)

2. How much energy is needed to raise the temperature of a 75g sample of aluminum from 22.4ºC to 94.6ºC? (Csp Aluminum = 0.897 J/g∙K)

(Ans: 4.9 x 103 J)

3. Energy in the amount of 420J is added to a 35g sample of water at a temperature of 10.0ºC. what is the final temperature of the water? (Csp Aluminum = 4.18 J/g∙K). (Ans: 13ºC)

4. a 4.0g sample of glass was heated from 274K to 314K and was found to absorb 32J of energy as heat. Calculate the specific heat of this glass.

(Ans: 0.20 J/g∙K)

5. Calculate the specific heat of a substance if a 35g sample absorbs 48J as the temperature is raised from 293K to 313K. (Ans: 0.069 J/g∙K)

6. the temperature of a piece of copper with a mass of 95.4g increases from 298K to 321.1K when the metal absorbs 849J of energy as heat. What is the specific heat of copper? (Ans: 0.385 J/g∙K)

7. If 980 kJ of energy as heat are transferred to 6.2L of water at 291K, what will the final temperature of the water be? The specific heat of water is 4.18J/g∙K. Assume that 1.0mL of water equals 1.0g of water

8. How much energy as heat must be transferred to raise the temperature of a 55g of sample aluminum from 22.4ºC to 94.6ºC? the specific heat of aluminum is 0.897J/g∙K.

9. A 5.00g sample of a metal was heated from 25.0ºC to 40.0ºC and it absorbed 17.6J of energy. What is its specific heat capacity?

10. A 1.6g sample of a metal was heated from 273K to 300K and it absorbed 5.57J of energy. What is the metals specific heat capacity?

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