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Physical Chemistry and Bio-Chemistry: Density and Dalton's Law
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Physical Chemistry and Bio-Chemistry: Density and Dalton's Law

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Questions and Answers

What is the formula for density of a gas?

  • Density = temperature × volume
  • Density = pressure × volume
  • Density = volume/mass
  • Density = mass/volume (correct)

    • At STP, the volume of 1 mole of a gas is:

  • 25.4 L
  • 20.4 L
  • 22.4 L (correct)
  • 24.4 L

    • According to Dalton’s law of partial pressures, the total pressure exerted by a mixture of gases is equal to:

  • The minimum partial pressure of the component gases
  • The average of the partial pressures of the component gases
  • The maximum partial pressure of the component gases
  • The sum of the partial pressures of the component gases (correct)

    • When collecting a gas over water, the collected gas is referred to as 'wet' gas because it also contains:

    <p>Water vapor</p> Signup and view all the answers

    Applying Dalton’s law of partial pressures, what can be used to determine the pressure of a collected gas over water?

    <p>$P_{total} = P_{gas} + P_{water vapor}$</p> Signup and view all the answers

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