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Properties of Gases

# Properties of Gases - The Properties of Gases Objective The...

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The Properties of Gases Objective The objective of this lab was to study the dependence of the volume of a gas on temperature and pressure. Experimental Data Part A Temperature (°C) Air Volume (cm) 7.0°C 4.3cm 27.0°C 4.5cm 37.0°C 4.6cm 50.0°C 4.8cm 65.0°C 5.1cm 75.0°C 5.2cm 95.0°C 5.5cm Part B P BAR 704±5mmHg Volume (mL) Sensor Pressure (mmHg) 1.0mL 572.9mmHg 2.0mL 328.2mmHg 3.0mL 115.6mmHg 4.0mL -0.4mmHg 5.0mL -129.5mmHg 7.0mL -260.0mmHg 9.0mL -343.3mmHg 10.0mL -377.1mmHg 12.0mL -426.7mmHg 13.0mL -444.5mmHg 15.0mL -478.4mmHg 16.0mL -490.4mmHg 17.0mL -504.5mmHg 18.0mL -513.4mmHg 20.0mL -523.8mmHg Sample Calculations Part A

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V=πr 2 h V=π(1.25mm ) 2 (4.5cm) V= 22.1mm 3 Part B P air = P sensor + P atm P air = -523.8mmHg + 704 ±5mmHg P air = 180.mmHg PV= 180mmHg x 20mL PV = 3604 mmHg/mL S=√Σ i=n i=1 (x 1 -x 2) N-1 Average PV product = 2999.6 2999.6-3270 = -270.4 -270.4 2 = 73116.16 √Square Deviation sum N-1 S = 628.32 Results and Conclusions Part A Temperature(°C) Height of air (cm) Volume (mm 3 ) 7.0°C 4.3cm 21.1 mm 3 27.0°C 4.5cm 22.1 mm 3 37.0°C 4.6cm 22.6 mm 3 50.0°C 4.8cm 23.6 mm 3 65.0°C 5.1cm 25.0 mm 3 75.0°C 5.2cm 25.5 mm 3 95.0°C 5.5cm 27.0 mm 3 The value of absolute zero based on the graph is about -290 degrees. There is little discrepancy between the absolute value and the measured value.
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Properties of Gases - The Properties of Gases Objective The...

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