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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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foodjunkie foodjunkie
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11 years ago
if 1500,000 Joules of energy are supplied to a kettle and 336000 Joules of energy are used to boil one liter of water. Calculate the energy efficiency of the kettle.


Can someone show me step to step how to solve this.
Also the calculations.
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zme_9325zme_9325
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11 years ago
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11 years ago
Power/Energy Efficiency = (Useful power/energy)/(Total power/energy supplied) x 100%
Energy efficiency = 336000/1500000 x 100%
Energy efficiency = 22.4%
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