A nonconducting container tilled with 25 kg of water at 20 C is fitted with a stirrer,
Question:
(a) The amount of work done on the water.
(b) The internal-energy change of the water.
(c) The final temperature of the water, for which CP = 4.18 kJ kg -1 oC-1
(d) The amount of heat that must be removed from the water to return it to its initial temperature.
(e) The total energy change of the universe because of (1) the process of lowering the weight (2) the process of cooling the water back to its initial temperature, and (3) both processes together.
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Related Book For
Introduction to Chemical Engineering Thermodynamics
ISBN: 978-0071247085
7th edition
Authors: J. M. Smith, H. C. Van Ness, M. M. Abbott
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