Lab 7 Charles Law V = V T T PreLab due by : 4/25 Performance date: 4/25 In Room 220.
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Transcript of Lab 7 Charles Law V = V T T PreLab due by : 4/25 Performance date: 4/25 In Room 220.
![Page 1: Lab 7 Charles Law V = V T T PreLab due by : 4/25 Performance date: 4/25 In Room 220.](https://reader035.fdocuments.in/reader035/viewer/2022062619/55192bce5503464a428b4d6f/html5/thumbnails/1.jpg)
Lab 7Charles’ Law
V = V’T T’
PreLab due by : 4/25Performance date: 4/25
In Room 220.
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Pre Lab:• Page 1– I Intro– II Materials/Equipment– III Diagram
• Page 2– IV Safety (see next frame)– V Procedure
• Next Page – VI Data Table (copy table 26-1 and add 2 columns
for Trials 2 and 3)
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Safety
You must wear: • close toed shoes (no flip flops or sandals)• Apron, goggles and have long hair tied back• Watch for hot surfaces – if you get a burn, run
cold water over the burnKeep thermometers from rolling off counter
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Write up is to include:
• Your prelab with your name on top right• Lab # and name on top left• Data• Calculations• Conclusions (discussion is titled conclusion)• Graph
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DATA
See next slide
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CalculationsLet’s do one complete set of calculations to find T’ and
V’. You will end up with 3 points to plot.T went from 96.0 oC to 25.5oC#5 volume of gas collected: 206.5 cm3
#8 pressure of dry gas101.3 kPa x 760 mm = 759.8 mm
101.325PaCorrect for WVP: 25 = 23.8 x = 24.3 mm
25.5 x759.8 mm - 100.0 mm – 24.3 mm = 728 mm
13.5
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Calc., cont.
#9: Use Boyle’s Law to find V’V’ = PV = (#8)(#5) = 728 mm (206.5 cm3) P’ (#6) 759.8 mmV’ = 197.9 = 198 cm3
1stpoint to plot: T’,V’ = 298.5K, 198 cm3
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