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Ideal Gas

Ideal Gas. Air is contained in a volume with a piston. The piston is pushed down to half of the original height while the temperature is held constant by a surrounding ice bath. By which factor does the force of the air against the piston change?. a) 1/2. b) 1. c) 2. d) 4.

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Ideal Gas

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  1. Ideal Gas

  2. Air is contained in a volume with a piston.The piston is pushed down to half of the original height while the temperature is held constant by a surrounding ice bath. By which factor does the force of the air against the piston change? a) 1/2 b) 1 c) 2 d) 4

  3. Air at 150 K is contained in a can with a lose piston. The temperature is increased to 300 K. Where will the piston be? a) At ½ height b) At twice the height c) No change 150 K d) No change, but the pressure will be half

  4. An Air compressor increases the pressure from 1 atm to 5 atm. Enough time is given for the temperature to adjust back to the surrounding temperature.If the density of the outside air is 1.2 kg/m3, what is the density of air inside of the air compressor? 6 kg/m3

  5. The tank holds a volume of 50 L.By how much does the weight of the tank change, if the density is increased from 1.2 kg/m3 to 6 kg/m3?

  6. Compare the density of dry air at a summer temperature of 30 C to the density of dry air at -20 C by finding the ratio of density summer/winter.

  7. If the atmospheric pressure on a 15 C is equal to 1002 hPa, how much mass of air is contained in a room the size of the class room (20m by 20 m by 3 m)?

  8. How much pressure will the weight of this air exert onto the floor of the room (20m by 20 m by 3 m)?

  9. How much mass of air is located in an air column of 1 square meter cross sectional area, in order to cause normal atmospheric pressure with its weight?

  10. Constant density: 1.225 kg/m3 Constant pressure 1000 mbar Needs a force equivalent to the weight of the air 1000 m

  11. Releasing a slice of 1/10 of mass on top Density and pressure drop – why? 100 mbar 1000 mbar 1000 m

  12. Releasing another slice of 1/10 of mass 100 mbar 100 mbar 200 mbar 1000 mbar 1000 m

  13. Releasing a third slice of 1/10 of mass 100 mbar 100 mbar 200 mbar 200 mbar 300 mbar 1000 mbar 1000 m

  14. 100 mbar Releasing a 4th slice of 1/10 of mass 100 mbar 200 mbar 300 mbar 400 mbar 1000 mbar 1000 m

  15. 80% above 100% above 50% below 80% below 800 mb 1000 mb 500 mb 200 mb 2000 m 0 m 5500 m 12000 m Continuous atmosphere

  16. The density of air moist dry Nitrogen replaced by water molecules: M(nitrogen)=28 to M(water)=18 Which of these air parcels will have the lower density?

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