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Use the method of mixtures to find out the specific heat capacity of a mass of brass.

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  • Essay length: 688 words
  • Submitted: 17/02/2004
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GCSE Green Plants as Organisms

The first 200 words of this essay...

Paanii Ansah-Kofi 11A

August 2003

Measuring the Specific Heat Capacity by Method of Mixtures

Aim:

To use the method of mixtures to find out the specific heat capacity of a mass of brass.

Hypothesis:

Using this method of mixtures it should be possible to find out this value as the energy lost by the hot substance cooling down (brass), is equal to the energy gained by the cold substance heating up (water). Knowing that the S.HC. of water is about 4 200 J kg-1 K-1, we may find what this value is for brass.

Apparatus:

Method:

* Firstly, the masses of both substances, brass and water, were measured on a weighing scale.

* The brass was then heated over a Bunsen burner in a water bath for a certain time period.

* The initial temperatures of both substances were also measured using thermometers. For the brass, the temperature after being heated is taken as its initial temperature.

* The hot piece of brass was mixed in with the water, which was presumably at room temperature.

* The maximum temperature of the mixture upon

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