Q4: The heater element of an electric kettle has a constant resistance of 120 n and the applied voltage is 220 V. Calculate the time taken to raise the temperature of one liter of water from 15°C to 90°C assuming that 78% of the power input to the kettle is usefully employed. If the water equivalent of the kettle is 100 g, find how long will it take to raise a second liter of water through the same temperature range immediately after the first.

Q4: The heater element of an electric kettle has a constant resistance of 120 n and the applied voltage is 220 V. Calculate the time taken to raise the temperature of one liter of water from 15°C to 90°C assuming that 78% of the power input to the kettle is usefully employed. If the water equivalent of the kettle is 100 g, find how long will it take to raise a second liter of water through the same temperature range immediately after the first.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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