properties of gas

# properties of gas - are related exponentially Average Value...

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Date Performed: 4/22/2010 Name: Joe Staba Date Submitted: 4/29/2010 Partner: Alyssa S. Instructor: Zhibing Xu The Properties of Gases Objective: To study the dependence of the volume of a gas on temperature and pressure. Experimental Data: Part A – Charles’ Law Temperature of the Air (°C) Volume of the Air (cm^3) 5 4.8 25 5.2 35 5.4 50 5.6 65 6.0 75 6.2 95 6.4 Part B – Boyle’s Law Volume (mL) Pressure (torr) Volume * Pressure (mL*torr) 1 667 667 2 376 752 3 163 489 4 0 0

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5 -99 -495 6 -177 -1062 7 -234 -1638 8 -284 -2272 9 -323 -2907 10 -357 -3570 11 -385 -4235 12 -410 -4920 13 -431 -5603 14 -449 -6286 15 -464 -6960 Sample Calculation: Part A – Charles’ Law Volume of Cylinder = (r^2)h Radius = 1.25mm ± .2mm = 0.125cm ± 0.02cm = (0.125±0.02)^2(20) =98.2±0.0004 cm^3 Part B – Boyle’s Law Pair = Psensor + Patm =667+760 =1437.4 torr P1V2=P2V2 =1437*1 =1437 torr
Results and Conclusions: Part A – Charles’ Law Estimated Value of Absolute Zero = -298°C Part B – Boyle’s Law Graph of Volume vs. Pressure As volume increases then Pressure decreases and vice versa. This means that they

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Unformatted text preview: are related exponentially. Average Value of the PressureVolume Product = absolute value of (-38040/15) = -2536 Standard Deviation for Pressure vs. Volume Product = standard deviation = √ (667)^2+(376)^2+(163)^2+(-99)^2+(-177)^2+(-234)^2+(-284)^2+(-323)^2+(-357)^2+(-385)^2+(-410)^2+(-431)^2+(-449)^2+(-464)^2 = √ 193153590= 13897.97 Graph of 1/Pressure vs. Volume The graph of 1/Pressure and Volume is linear. This proves Boyle’s Law is true and that volume and pressure are inversely related. Discussion of Experimental Uncertainty: The most evident reason for experimental uncertainty is the lack of accurate measurements while measuring the data points. Also, we could have constructed the apparatus incorrectly. Standard Temperature and Pressure is not always the same in all labs. _____________________________________________________________________________ _...
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properties of gas - are related exponentially Average Value...

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