Answered: A nonconservative force: Always takes…

A nonconservative force: Always takes energy from a system Always adds energy to a system may add or take energy to or from a system does not change the energy of a system

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter9: Energy For Today

Section: Chapter Questions

Problem 2SC: The second law of thermodynamics is sometimes paraphrased as: you can't break even. Explain. Because...

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Question

A nonconservative force:
Always takes energy from a system
Always adds energy to a system
may add or take energy to or from a
system
does not change the energy of a system

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When steam condenses to liquid water, 2.26 kJ of heat is released per gram. The heat from 168 g of steam is used to heat a room containing 6.44 104 g of air (20 ft 12 ft 8 ft). The specific heat of air at normal pressure is 1.015 J/(gC). What is the change in air temperature, assuming the heat from the steam is all absorbed by air?
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ou place hot metal into a beaker of cold water. ol type='a'> Eventually what is true about the temperature of the metal compared to that of the water? Explain why this is true. i>Label this process as endothermic or exothermic if we consider the system to be the metal. Explain. the water. Explain.
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