8. A substance has a specific heat capacity of 3.28 J g¹ K¹. This means that... A A) It takes 32.8 J of heat to warm one gram of the substance by 10 °C. B) It takes 32.8 J of heat to warm two grams of the substance by 20 K. C) At 100 K, one gram of the substance has an internal energy of 328 J. D) When one gram of the substande warms up by 10 K, 32.8 J of heat are released. E) One gram of the substance warms up by 3.28 K when 1 J of energy is added. 7. Shown below is cooling curve for one mole of a substance. The numbers indicate the five portions of the curve. How many of the following statements are correct? ● ● ● Temperature 2 3 Amount of heat removed A) 1 B) 2 C) 3 D) All statements are correct E) None of the statements are correct 4.00 5 The temperature of the substance at portion 4 of the curve corresponds to the boiling point of the substance. The substance has a larger Heat of vapourization than a heat of fusion. All three states of the substance have similar specific heat capacities. The average kinetic energy of the molecules is changing as the temperature decreases in portion 1 of the graph.

8. A substance has a specific heat capacity of 3.28 J g¹ K¹. This means that... A A) It takes 32.8 J of heat to warm one gram of the substance by 10 °C. B) It takes 32.8 J of heat to warm two grams of the substance by 20 K. C) At 100 K, one gram of the substance has an internal energy of 328 J. D) When one gram of the substande warms up by 10 K, 32.8 J of heat are released. E) One gram of the substance warms up by 3.28 K when 1 J of energy is added. 7. Shown below is cooling curve for one mole of a substance. The numbers indicate the five portions of the curve. How many of the following statements are correct? ● ● ● Temperature 2 3 Amount of heat removed A) 1 B) 2 C) 3 D) All statements are correct E) None of the statements are correct 4.00 5 The temperature of the substance at portion 4 of the curve corresponds to the boiling point of the substance. The substance has a larger Heat of vapourization than a heat of fusion. All three states of the substance have similar specific heat capacities. The average kinetic energy of the molecules is changing as the temperature decreases in portion 1 of the graph.

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter9: Energy And Chemistry

Section: Chapter Questions

Problem 9.106PAE

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