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Physics / University Physics 13 / Chapter 17 / Problem 52E

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

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BIO Steam Burns Versus Water Burns. What is the amount of

Chapter 17, Problem 52E

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QUESTION:

BIO Steam Burns Versus Water Burns. What is the amount of heat input to your skin when it receives the heat released (a) by 25.0 g of steam initially at 100.0o C, when it is cooled to skin temperature (34.0o C)? (b) By 25.0 g of water initially at 100.0o C, when it is cooled to 34.0o C? (c) What does this tell you about the relative severity of burns from steam versus burns from hot water?

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QUESTION:

BIO Steam Burns Versus Water Burns. What is the amount of heat input to your skin when it receives the heat released (a) by 25.0 g of steam initially at 100.0o C, when it is cooled to skin temperature (34.0o C)? (b) By 25.0 g of water initially at 100.0o C, when it is cooled to 34.0o C? (c) What does this tell you about the relative severity of burns from steam versus burns from hot water?

ANSWER:

Solution 52E Mass of steam m = 25.0 g m = 0.025 kg Latent heat of vaporization of water L = 2258000 J/kg 0 0 0 Temperature change T = 100 C 34 C = 66 C 0 Specific heat of water s = 4184 J/kg C (a) Total a

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