Assume that cream has a specific heat of 2900 J/kg· ◦C and has the same heat of fusion (3.34 × 105 J/kg) and melting point as water, and that ice cream has a specific heat of 2200 J/kg· ◦C. If two kilograms of cream are initially at 10◦C, how much liquid nitrogen, which has a latent heat of vaporization of 2.00 × 105 J/kg, must be vaporized to cool, freeze, and further cool the cream to -10◦C? Assume that the liquid nitrogen is kept at 77 K, the temperature of its liquid-gas phase transition, and that the gas floats away into the room at that temperature (so no heat goes to heating up the nitrogen gas).
Assume that cream has a specific heat of 2900 J/kg· ◦C and has the same heat of fusion (3.34 × 105 J/kg) and melting point as water, and that ice cream has a specific heat of 2200 J/kg· ◦C. If two kilograms of cream are initially at 10◦C, how much liquid nitrogen, which has a latent heat of vaporization of 2.00 × 105 J/kg, must be vaporized to cool, freeze, and further cool the cream to -10◦C? Assume that the liquid nitrogen is kept at 77 K, the temperature of its liquid-gas phase transition, and that the gas floats away into the room at that temperature (so no heat goes to heating up the nitrogen gas).
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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Assume that cream has a specific heat of 2900 J/kg· ◦C and has the same heat of fusion (3.34 × 105 J/kg) and melting point as water, and that ice cream has a specific heat of 2200 J/kg· ◦C. If two kilograms of cream are initially at 10◦C, how much liquid nitrogen, which has a latent heat of vaporization of 2.00 × 105 J/kg, must be vaporized to cool, freeze, and further cool the cream to -10◦C? Assume that the liquid nitrogen is kept at 77 K, the temperature of its liquid-gas phase transition, and that the gas floats away into the room at that temperature (so no heat goes to heating up the nitrogen gas).
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