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Unformatted text preview: Calculations This calculation was used to determine the number of moles of gas in the flask. Moles of gas = mass of gas/ molecular weight of gas Moles of gas = This calculation was used to determine the experimental gas constant, R. PV = nRT or R= PV/nT This calculation was used to find the average R value. Average R value = R1 + R2 + R3/ 3 Average R value = The last calculation was finding the standard deviation. Standard Deviation = √(Ra – R1) 2 + (Ra – R2) 2 + (Ra – R3) 2 / 3-1 (Ra stands for Average R) Standard Deviation = Results This table shows all the measured and calculated values for the three separate trials. Trial 1 Trial 2 Trial 3 Overall Moles of gas (mol) Gas Constant (R) (L atm/ mol K) Average R (L atm/ mol K) Deviations Standard Deviation Deviation of Average from Ideal Discussion...
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- Spring '08