Download - How do you handle the calculations and data for the gas law lab (molar mass of butane)? February 27
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How do you handle the calculations and data for the gas law lab (molar
mass of butane)?February 27
![Page 2: How do you handle the calculations and data for the gas law lab (molar mass of butane)? February 27](https://reader035.vdocument.in/reader035/viewer/2022080902/56649d0e5503460f949e3a8d/html5/thumbnails/2.jpg)
Finishing up the Gas UnitData Calculations: Trial 1
Calculate pressure of gas sample:PT = Pgas + Pwater
759.0 mmHg = Pgas - 23.1 mmHg
Pgas = 735.9 mmHg or 0.9683 atm
Calculate mass of butane in gas sample:Mass of butane = Initial mass – Final mass
Calculate moles of butane in gas sample:PV = nRT
Calculate molar mass for this Trial:Mass of butane / Moles of butane
Trial 1
Atmospheric Pressure (PT)
759.0 mmHg
Water Temperature in K 24.5 C or 297.5 K
Water vapor pressure at temperature recorded.
23.1 mmHg
Initial Mass of Lighter
16.9523 g
Final Mass of Lighter.
16.8501g
Volume of gas sample in Liters
47.80 mL or0.04780 L
Click on number for water vapor table.
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Finishing up the Gas Unit
Data
Calculations: Trial 1Calculate pressure of gas sample:PT = Pgas + Pwater
Calculate mass of butane in gas sample:Mass of butane = Initial mass – Final mass16.9523 g – 16.8501 g = 0.1002 g
Calculate moles of butane in gas sample:PV = nRT
Calculate molar mass for this Trial:Mass of butane / Moles of butane
Trial 1
Atmospheric Pressure (PT)
759.0 mmHg
Water Temperature in K 24.5 C or 297.5 K
Water vapor pressure at temperature recorded.
23.1 mmHg
Initial Mass of Lighter
16.9523 g
Final Mass of Lighter.
16.8501g
Volume of gas sample in Liters
47.80 mL or0.04780 L
![Page 4: How do you handle the calculations and data for the gas law lab (molar mass of butane)? February 27](https://reader035.vdocument.in/reader035/viewer/2022080902/56649d0e5503460f949e3a8d/html5/thumbnails/4.jpg)
Finishing up the Gas Unit
Data
Calculations: Trial 1Calculate pressure of gas sample:PT = Pgas + Pwater
759.0 mmHg = Pgas + 23.1 mmHg
Pgas = 735.9 mmHg or 0.9683 atm
Calculate mass of butane in gas sample:Calculate moles of butane in gas sample:PV = nRT0.9863 atm ( 0.04780 L) = n (.0821 Latm/(molK) 297.5K
0.9863 X 0.04780 / 0.0821/297.5 =
0.001930 molesCalculate molar mass for this Trial:Mass of butane / Moles of butane
Trial 1
Atmospheric Pressure (PT)
759.0 mmHg
Water Temperature in K 24.5 C or 297.5 K
Water vapor pressure at temperature recorded.
23.1 mmHg
Initial Mass of Lighter
16.9523 g
Final Mass of Lighter.
16.8501g
Volume of gas sample in Liters
47.80 mL or0.04780 L
![Page 5: How do you handle the calculations and data for the gas law lab (molar mass of butane)? February 27](https://reader035.vdocument.in/reader035/viewer/2022080902/56649d0e5503460f949e3a8d/html5/thumbnails/5.jpg)
Finishing up the Gas Unit
Data
Calculations: Trial 1Calculate pressure of gas sample:
Calculate mass of butane in gas sample:Mass of butane = Initial mass – Final mass16.9523 g – 16.8501 g = 0.1022 g
Calculate moles of butane in gas sample:PV = nRT
0.001930 moles
Calculate molar mass for this Trial:Mass of butane / Moles of butane 0.1022 g / 0.001930 = 52.95 g/mol
Trial 1
Atmospheric Pressure (PT)
759.0 mmHg
Water Temperature in K 24.5 C or 297.5 K
Water vapor pressure at temperature recorded.
23.1 mmHg
Initial Mass of Lighter
16.9523 g
Final Mass of Lighter.
16.8501g
Volume of gas sample in Liters
47.80 mL or0.04780 L