Physical Chemistry and Bio-Chemistry Quiz
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Questions and Answers

What is the density of a gas generally given in?

  • g/cm3
  • mol/L
  • g/L (correct)
  • kg/m3
  • What is the volume of 1 mole of gas at STP?

  • 24.8 L
  • 25.0 L
  • 22.4 L (correct)
  • 20.0 L
  • According to Dalton's law of partial pressures, what is the total pressure exerted by a mixture of gases at constant volume and temperature?

  • The lowest partial pressure of the component gases
  • The average of the partial pressures of the component gases
  • The highest partial pressure of the component gases
  • The sum of the partial pressures of the component gases (correct)
  • What term refers to the gas collected in a graduated cylinder, which contains water vapor?

    <p>&quot;Wet&quot; gas</p> Signup and view all the answers

    At what atmospheric pressure is the water temperature measured in the context of collecting a gas over water?

    <p>760 mm Hg</p> Signup and view all the answers

    According to the kinetic molecular theory, which of the following is true about gas molecules?

    <p>They exhibit random, non-linear motion</p> Signup and view all the answers

    What is the evidence supporting the postulate that gas molecules have elastic collisions with themselves and the container?

    <p>A sealed, confined gas exhibits no pressure drop over time</p> Signup and view all the answers

    What type of behavior do almost all gases exhibit, contrary to the behavior of an ideal gas?

    <p>Deviations from ideal behavior</p> Signup and view all the answers

    What does the kinetic energy of gas molecules depend on, according to the kinetic molecular theory?

    <p>The absolute temperature</p> Signup and view all the answers

    Which phenomenon provides evidence for the constant, random, straight line motion of gas molecules?

    <p>Brownian motion</p> Signup and view all the answers

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