Answered: Approximately how much heat must be…

Approximately how much heat must be removed from 0.5 kg of 50 °C water to freeze it into 0 °C ice? [for water L = 334,000 J/kg and c = 4200 J/(kg K)] O a. 272,000 J

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter15: Thermodynamics

Section: Chapter Questions

Problem 2PE: How much heat transfer occurs from a system, if its internal energy decreased by 150 J while it was...

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Concept explainers

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.

Question

Approximately how much heat must be removed from 0.5 kg of 50 °C water to freeze it into 0 °C ice? [for water
L = 334,000 J/kg and c =
4200 J/(kg•K)]
O a. 272,000 J
O b. 105,000 J
O c. 105 J
O d. 167,000 J

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How much heat transfer occurs from a system, if its internal energy decreased by 150 J while it was doing 30.0 J of work?