A kettle delivers 2.80 kW of power to 1.45 kg of water. The water is initially at a temperature of 23.0 °C and the kettle is 74% efficient at heating the water. Assuming the entire mass of water must be heated to the boiling point before any begins to vapourize, how long must the kettle be on in order for 0.350 kg of water to be turned to water vapour?

A kettle delivers 2.80 kW of power to 1.45 kg of water. The water is initially at a temperature of 23.0 °C and the kettle is 74% efficient at heating the water. Assuming the entire mass of water must be heated to the boiling point before any begins to vapourize, how long must the kettle be on in order for 0.350 kg of water to be turned to water vapour?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 11P

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