Specific Heat Purpose: TO study the transfer of heat betweenmasses at different

Question

Specific Heat Purpose: TO study the transfer of heat betweenmasses at different temperatures and to measure the specific heat of aluminum. Required Equipment and Supplies: Part : Styrofoam cups, supply of hot and cool water, metric balance, steel nails, thermometer Part 2: Calorimeter, steam generator, aluminum samples. of water and metal at In this experiment we study the transfer of thermal energy between masses different temperatures. In Part 1 we will attempt to predict the final temperature of the mixture as well as determine which material, water or steel, has the greatest ability to store heat energy. In Part 2 we will use the method of mixtures to measure the specific heat of aluminum. Procedure 1 1. Fill two styrofoam cups to an equal level (about halfway up), one with cool water and one with warm water. Measure the temperatures with a thermometer and record in the spaces below. 22.4 oc 75 ml T T. 2. Keeping in mind that the two masses of water should be the same, what do you predict would be the final temperature of the water if you mix the two samples? oC Myguess is Tres 3. Now combine the two samples and measure the final temperature. You should wait a minute or two for the temperature to come to equilibrium as the samples mix. Don't spi any! Record the final mixture temperature in the space below. oC frd Page 1

Explanation / Answer

To compare the predicted temperature with the actual temperature of the mixture, we have to determine the percentage error of our result.

Here, Predicted Temperature, Tpred = 560 C

Actual temperature of the mixture, Tact = 56.50 C

Now, percentage error in the result = [(Tact - Tpred) / Tact] x 100

= [(56.5 - 56) / 56.5] x 100

= 50 / 56.5 = 0.885 %.

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