2. What is the entropy change of the water, the oven and the universe (in kJ/K) when 1 kg of liquid water at 25°C is heated to saturated vapor at 100°C in an oven that is at 150°C. Answers: ASH20 = 6.988 kJ/K; ASoven = -6.076 kJ/K; ASuniverse = 0.912 kJ/K

2. What is the entropy change of the water, the oven and the universe (in kJ/K) when 1 kg of liquid water at 25°C is heated to saturated vapor at 100°C in an oven that is at 150°C. Answers: ASH20 = 6.988 kJ/K; ASoven = -6.076 kJ/K; ASuniverse = 0.912 kJ/K

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

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2. What is the entropy change of the water, the oven and the universe (in kJ/K) when 1 kg of liquid
water at 25°C is heated to saturated vapor at 100°C in an oven that is at 150°C.
Answers: ASH20 = 6.988 kJ/K; ASoven = -6.076 kJ/K; AS universe = 0.912 kJ/K

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