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Calculated Temperature of Flame

Essay by   •  December 11, 2015  •  Lab Report  •  362 Words (2 Pages)  •  1,233 Views

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The independent variable for the procedure will be the mass of the brass that is being heated up, which will be controlled by using the same piece of brass for each trial of that mass. The masses that will be used are 1g, 2g, 5g, 10g, 20g, and 50g. These masses have a wide enough range at the higher masses to easily be able to see if any significant change was made, while the small range in the lower masses will make it simple to evaluate any small significant changes, should there be some. The dependent variable will be the temperature of the flame. Other variables include: the height of the brass above the flame which was being controlled by having the brass set on a platform at a constant height, the height of the flame which will be kept at the same height for all the trials by allowing the same amount of oxygen to the flame, the amount of time the brass is soaking in the flame which will be controlled by having a person use a stopwatch to measure the amount of time since the brass was placed on the flame, and the thermometers were kept the same by calibrating them before they were used.

Materials:

• 6 Pieces of Brass at Varying Weights

• Thermometer

• Computer

• Sparkvue

• Bunsen Burner

• Platform for Brass

• Calorimeter

• Ruler

• Stopwatch

Method:

1. Put on goggles to protect eyes

2. Mass all of the pieces of brass and the calorimeter sleeve.

3. Place an amount of water in the calorimeter sleeve and mass, taking away the previously massed sleeve to attain just the water mass.

4. Turn on Bunsen burner with lowest setting and then increase for safety, and set the platform 3cm above the flame.

5. Place the piece of brass on top of the platform for 120 seconds.

6. Remove the brass from the platform and place directly into the calorimeter, closing the lid of the calorimeter.

7. Stir the brass in the water in order to reach equilibrium of the temperatures and record water temperature.

8. Remove the sleeve with the water inside, mass it again, and record the mass of the water after the brass was put in it.

9. Pour the water out of the sleeve and replace it in the calorimeter.

10. Repeat steps 2-8 for each mass at least once.

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