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1. A sample of a liquid which has molar mass 102 g/mol was heated in a vessel by using electricity. The liquid boiled at 78°C when the pressure was 650 Torr. At the boiling point, it was found that 1.871 g of the sample vaporized when a current of 0.232 A from a 12.0 V supply was passed for 650 s. Calculate the (molar) enthalpy and internal energy of vaporization.

1. A sample of a liquid which has molar mass 102 g/mol was heated in a vessel by using electricity. The liquid boiled at 78°C when the pressure was 650 Torr. At the boiling point, it was found that 1.871 g of the sample vaporized when a current of 0.232 A from a 12.0 V supply was passed for 650 s. Calculate the (molar) enthalpy and internal energy of vaporization.

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.105QP: A piece of lead of mass 121.6 g was heated by an electrical coil. From the resistance of the coil,...
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1. A sample of a liquid which has molar mass 102 g/mol was heated in a vessel by using electricity. The liquid boiled at 78°C when the pressure was 650 Torr. At the boiling point, it was found that 1.871 g of the sample vaporized when a current of 0.232 A from a 12.0 V supply was passed for 650 s. Calculate the (molar) enthalpy and internal energy of vaporization.
Transcribed Image Text:1. A sample of a liquid which has molar mass 102 g/mol was heated in a vessel by using electricity. The liquid boiled at 78°C when the pressure was 650 Torr. At the boiling point, it was found that 1.871 g of the sample vaporized when a current of 0.232 A from a 12.0 V supply was passed for 650 s. Calculate the (molar) enthalpy and internal energy of vaporization.
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