Question: A kettle containing 3.00 liters of water at a temperature of 18C is placed on an electric stove and begins to boil in four minutes.

A kettle containing 3.00 liters of water at a temperature of 18°C is placed on an electric stove and begins to boil in four minutes.

(a) Write an energy balance on the water, neglecting evaporation that may occur during the heating.

(b) What is the average rate (W) at which heat is added to the water during this period?

(c) The rate of heat output from the stove element differs significantly from the heating rate calculated in part (b) In which direction, and why?

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