Question

If a heater with power 1000W gives 3600KJ of heat energy in an hour, what will be raise in the temperature of 50kg water by the heat? Specific heat capacity of water is 4200J/kgK

Answer 1

Heat energy absorbed by calorimeter = mSt

=0.16×S×(45−15)=4.8S

Now, Heat given = Heat taken4.8S=2100⇒S=4.8

2100=437.5Jkg

−1o C −1