In electrical calorimeter experiment, voltage across the heater is $$100.0$$ V and current is $$10.0$$ A. Heater is switched on for $$t=700.0$$ s. Room temperature is θ$$0=10.0$$°C and final temperature of calorimeter and unknown liquid is θ$$f=73.0$$°C. Mass of empty calorimeter is $$m1=1.0$$ kg and combined mass of calorimeter and unknown liquid is $$m2=3.0$$ kg. Find the specific heat capacity of the unknown liquid in proper significant figures. Specific heat of calorimeter $$=$$ $$3.0$$×$$103$$ $$J/kg$$°C

Question

In electrical calorimeter experiment, voltage across the heater is $$100.0$$ V and current is $$10.0$$ A. Heater is switched on for $$t=700.0$$ s. Room temperature is θ$$0=10.0$$°C and final temperature of calorimeter and unknown liquid is θ$$f=73.0$$°C. Mass of empty calorimeter is $$m1=1.0$$ kg and combined mass of calorimeter and unknown liquid is $$m2=3.0$$ kg. Find the specific heat capacity of the unknown liquid in proper significant figures. Specific heat of calorimeter $$=$$ $$3.0$$×$$103$$ $$J/kg$$°C

Infinity Learn · Accepted Answer

Given, $$V=100.0$$ V, $$i=10.0$$ A, $$t=700.0$$ s, θ$$0=10.0$$°C, θ$$f=73.0$$°C,$$m1=1.0$$ kg and $$m2=3.0$$ kgSubstituting the values in the expression,$$Sl=1m2-m1Vit$$θ$$f-$$θ$$0-m1ScSl=13.0-1.0(100.0)(10.0)(700.0)73.0-10.0-(1.0)3.0$$×$$103=4.1$$×$$103$$ $$J/kg$$°C

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