Ch (3) : Gases Laws - Quiz -

18 Questions | Total Attempts: 681

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CH (3) : Gases laws - Quiz - Faculty of Engineering, Zagazig University BY ENG >>> Mahmoud Esmail AL Nagr


Questions and Answers
  • 1. 
    A sample of gas is collected by water displacement. The atmospheric pressure in the room is 757 mm Hg and the vapor pressure of water is 17 mm Hg. What is the partial pressure of hydrogen under these conditions?  
    • A. 

      17 mm Hg

    • B. 

      740 mm Hg

    • C. 

      757 mm Hg

    • D. 

      774 mm Hg

    • E. 

      You cannot answer this question because you do not know the temperature

  • 2. 
    At constant temperature, if a gas occupies 312 mL at a pressure of 1.60 atm, what pressure is necessary for this gas to occupy a volume of 500 mL
    • A. 

      1.00 atm

    • B. 

      0.624 atm

    • C. 

      156 atm

  • 3. 
    Boyle's Law shows?
    • A. 

      The inverse relationship between the volume and pressure of a gas

    • B. 

      the direct relationship between the volume and temperature of a gas

    • C. 

      Outcome of the people vs. Boyle trial

    • D. 

      The indirect relationship between the volume and temperature of gas

  • 4. 
    A gas of volume 5 m3 and 1x105 Pa is compressed until its volume is 2 m3 . What is the new pressure of the gas?  
    • A. 

      2.0x105 Pa

    • B. 

      2.5x105 Pa

    • C. 

      5.0x105 Pa

  • 5. 
    A sample of gas is heated in a sealed container from 27°C to 127°C. The volume of gas stays constant. What is the final pressure of the gas if the initial pressure is 1.2x105  Pa?
    • A. 

      1.2x105 Pa

    • B. 

      1.6x105 Pa

    • C. 

      2.0x105 Pa

  • 6. 
    Boyle's Law: P1V1=P2V2 The volume of a gas at 99.0 kPa is 300mL. If the pressure increases to 188kPa, what is the final volume?
    • A. 

      569mL

    • B. 

      52.1mL

    • C. 

      158mL

  • 7. 
    Charles' Law: V1/T1 = V2/T2 The celsius temperature of a 3.00L sample of gas is lowered from 80.0 C to 30.0 C. What is the final volume?
    • A. 

      4.21L

    • B. 

      1.57L

    • C. 

      2.58L

  • 8. 
    Using Avogadro’s Principle, identify which of the following conditions is correct?
    • A. 

      At the same temperature and same pressure, 1 mole of two different gases occupies the same volume

    • B. 

      At the same temperature and same pressure, 1 mole of two different gases occupies different volumes

    • C. 

      1 mole of any gas occupies the same volume at the same pressure

    • D. 

      1 mole of any gas occupies the same volume at the same temperature

  • 9. 
    Id eal g ases
    • A. 

      Have no volume

    • B. 

      Have no mass

    • C. 

      Have no attractive forces betweenthem

    • D. 

      Combination of choices a and c

    • E. 

      None of the above

  • 10. 
    At a temperature of 440. K, a gas exerts a pressure of 240. kPa.  If the pressure is lowered to 60. kPa, what is the temperature of the gas?   For this question, do NOT place units on response
  • 11. 
    As the temperature of cloud of gasoline vapor is warmed by the sun, what happens to the volume of the cloud?    
    • A. 

      The cloud's volume increases as the temperature of a gas is directly related to its volume.

    • B. 

      The cloud's volume increases as the temperature of a gas is inversely related to its volume.

    • C. 

      The cloud's volume decreases as the temperature of a gas is directly related to its volume.

    • D. 

      The cloud's volume decreases as the temperature of a gas is inversely related to its volume.

  • 12. 
    A gas that occupies 44 L exerts a pressure of 25 kPA.  If the volume of the container shrinks to 22 L, what is the new gas pressure?  For this question, do NOT place units on entered response.
  • 13. 
    For a confined gas kept at constant temperature, what relationship exists between the pressure exerted by the gas and the volume the gas occupies?
    • A. 

      These variables are directly related because increasing volume of the gas decreases the pressure the gas exerts

    • B. 

      These variables are directly related because increasing volume of the gas increases the pressure the gas exerts

    • C. 

      These variables are inversely related because increasing volume of the gas decreases the pressure the gas exerts

    • D. 

      These variables are inversely related because increasing volume of the gas increases the pressure the gas exerts

  • 14. 
    At a temperature of 444 K a gas occupies a volume of 480. L.   If the volume of the gas is reduced to 240. L, what temperature is required?  For this question, do NOT place units on response
  • 15. 
    A temperature of 200. K, a gas exerts a pressure of 32 atm.  If the temperature rises to 600. K, what will be the new pressure exerted by the gas?   For this question, do NOT place units on response.
  • 16. 
    A balloon is inflated to a volume of 130 ml at a pressure of 690 mmHg. If the pressure is increased to 1000 mmHg, what will the new volume be?
    • A. 

      188 ml

    • B. 

      98.8 ml

    • C. 

      89.7 ml

    • D. 

      40300 ml

  • 17. 
    Carbon dioxide occupies a 2.54 L container at STP. What will be the volume when the pressure is 150 KPa and 26 C?
    • A. 

      1.89 L

    • B. 

      42300 L

    • C. 

      0.163 L

    • D. 

      14.1 L

  • 18. 
    The volume of a gas is increased from 150.0 mL to 350.0 mL by heating it. If theoriginal temperature of the gas was 25.0 °C?
    • A. 

      -146 C

    • B. 

      10.7 C

    • C. 

      695 C

    • D. 

      150 C

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