K.C.S.E Physics Q & A - MODEL 1996PP2QN04

K.C.S.E Physics Q & A - MODEL 1996PP2QN04

(a) (i) Describe the experiment to determine the specific heat capacity C, of a block of aluminium with two holes drilled in it, to accommodate a thermometer and an electric immersion heater
(ii) State the measurements required in the experiment and show how they would be used to obtain C
(iii) State two precaution that should be taken in this experiment
(b) A copper calorimeter of mass 60g is filed with 100g of water at 25C. Steam at a normal temperature and pressure ( N.T.P) is passed thought the water until a temperature 45C is attained. The final mass of calorimeter and the contents was found to be 163.5g. Calculate the specific latent heat of vaporization „l‟ of water Specific heat capacity for water is 4200JKg^-1 and for copper is 378Kg^-1K¹

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