2 kg of water is contained in a 2.5 KW electric kittle. Assuring that the heat capacity of the kettle is negligible. Calculate (i) the time taken for the temp of water to rise from 25 degree centigrade to it boiling point 100 degree centigrade. (ii) the mass of the water evaporated per second from the boiling water. S.L.H of ice = 336X10^3J/kg.

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Again Q = mc change T from 25 to 100.
Power (2.5kW) * time will equal this Q

answered by Chanz

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2 kg of water is contained in a 2.5 KW  electric kittle. Assuring that the heat capacity of the kettle is negligible. Calculate (i) the time taken for the temp of water to rise from 25 degree centigrade to it boiling point 100 degree centigrade. (ii) the mass of the water evaporated per second from the boiling water. S.L.H of ice = 336X10^3J/kg.
It is

Chanz · Answer

Again Q = mc change T from 25 to 100. Power (2.5kW) * time will equal this Q