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Experiment to measure the Specific Heat Capacity of Water

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Introduction

Experiment to measure the Specific Heat Capacity of Water Diagram Method * Apparatus was set up as shown in the diagram. * DC power supply was turned to 12 volts. * The calorimeter was weighed with and without water, the results were subtracted to give the water mass. * Initial water temperature was recorded. * The current was measured in the ammeter and recorded. * Water was left to heat for 10 minutes. ...read more.

Middle

0.159 Kg Shc, (c= Q m 7358.5 kJ/kg/�C Conclusion We experimentally calculated the shc of water to be 7358.5 kJ/Kg/�C. Compared to the theoretical value of the specific heat capacity of 4180 kJ/�C, our results were considerably higher. Evaluation The results showed a considerable amount of inaccuracies. These were: * The amount of water in the calorimeter could have affected the results by being measured imprecisely and not accurately calculated. ...read more.

Conclusion

To improve the results, some measures could be taken: * The current/thermometer reading should be more precise and taken by more/different people. * The amount of water should be precisely 20ml and in the experiment repeat be exactly equal. * The time should be exactly precise. * The voltage could be changed to try to equal the normal shc of water. * The calorimeter should have a separate insulator, so that the aluminium could be easily weighed, Q = M C C = 900J/kg/�C ?? ?? ?? ?? ...read more.

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