Experiment 2 lecture.pdf - 9/18/2013 Chem21labs...

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9/18/201311. Graph for Exp 1C2. Experiment 2Please get your clickers out.Chem21labsPostlab assignments:Please make sure your data is entered correctlybefore you confirm it.Start early. That way if you get something wrongyou can get help instead of just guessing.Prelab assignments:You get several tries on the draganddropproblem – but you only get partial credit forthose tries.You only get credit for the first try for multiplechoice questions.2Good graphs0.1050.1150.1250.1350.1450.155260310360Pressure (atm)Temperature (K)Pressure dependence ontemperature for 0.00500 moles ofHe in a 1.00 L containerThe title should bedescriptive andshould be on thetop. (Don’t use vs.)The data shouldtake up most of theinterior space. Thebottom cornerdoesNOTneed tobe at (0,0)30.1050.1150.1250.1350.1450.155260310360Pressure (atm)Temperature (K)Pressure dependence ontemperature for 0.00500 moles of Hein a 1.00 L containerAxes should belabeled, with units.The xaxis should beon the bottom, theyaxis on the left side.4Data points should beclearly visible.Both horizontal and verticalgridlines are necessary.The trendline or bestfitcurve should be shown andshould NOT extend beyondthe data.Do not “connect the dots”.The graph should be largeenough to see any deviationfrom the line of best fit.0.1050.1150.1250.1350.1450.155260310360Pressure (atm)Temperature (K)Pressure dependence ontemperature for 0.00500 moles ofHe in a 1.00 L container5Finding the st dev of the slope andintercept using the LINEST functionSee Blackboard (General information)You need to highlight an empty 2x2 area ofthe spreadsheet.xvaluesyvalues########################6
9/18/20132= LINEST(yvalue range, xvalue range, 1,1)= LINEST(b2:b5, a2:a5, 1, 1)Then hit CTRLSHIFTENTER using Windows orCOMMANDRETURN on a Macxvaluesyvalues######slopeintercept######st dev of slopest dev of intercept############7Chem21labs will ask for these values to a lot of digits

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Term
Fall
Professor
LOUISEPASTERNACK
Tags
Chemistry, The Vapors, Sig Figs, st dev, pressure dependence, atm, Maximum sig figs

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