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112806Gases and Absolute Zero Lab

# 112806Gases and Absolute Zero Lab - const.volume P FV 19.1...

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10 Gases and Absolute Zero CH 141 Laura Dunn 11/28/06 Section 101

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Purpose : To determine the quantitative relationship between pressure and volume at constant temperature, and from that relationship plot a graph showing absolute zero. Procedure : Refer to lab text. Data : Boyle’s Law Experimental barometric pressure: 762.4 mm Hg (torr) VP of water at 19 degrees C = 16.48 torr Corrected pressure of dry air = 745.92 torr Experimental vol. (V) (ml) Hg equivalent of water column (torr) Corrected pressure of dry gas (P) (torr) PV (torr) (ml x 10 -4 ) a.) initial = 35.3 ml None 745.92 torr 2.6331 b.) 0.5 m above = 33.7 ml 37.0 torr 782.92 torr 2.6384 c.) 1 m above = 32.2 ml 74.1 torr 820.02 torr 2.6405 d.) 0.5 m below = 36.5 ml -37.0 torr 708.92 torr 2.5876 e.) 1 m below = 39.4 ml -74.1 torr 671.82 torr 2.6470 Charles’ Law Temp. of water = 19.1 degrees C Flask (temp degrees C) Volume of gas (ml) Pressure dry gas P D Pressure in flask P F Pressure flask

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Unformatted text preview: const.volume P FV 19.1 35.4 ml 745.92 torr 762.40 torr 762.40 torr 33 34.2 ml 772.09 torr 788.57 torr 781.00 torr 44 33.4 ml 790.58 torr 807.06 torr 794.15 torr 53 32.7 ml 807.10 torr 823.58 torr 805.79 torr 61 32.3 ml 817.51 torr 833.99 torr 813.31 torr 75 31.5 ml 838.27 torr 854.75 torr 828.08 torr Calculations : Results: I found the value of absolute zero to be about -770 degrees C which is obviously incorrect but all my calculations were as accurate as possible. The goal of this experiment to determine the quantitative relationship between pressure and volume at constant temperature, and from that relationship plot a graph showing absolute zero was achieved, with some error as stated above. This could have been caused by many things, including human error and moisture inside the stopper we used while boiling the water and comparing the pressures....
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112806Gases and Absolute Zero Lab - const.volume P FV 19.1...

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