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Dumas Method Quiz
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Dumas Method Quiz

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Questions and Answers

What method was developed in 1832 by J.B. Dumas for determining molar masses?

  • The Boyle Method
  • The Dumas Method (correct)
  • The Avogadro Method
  • The Dalton Method
  • What did J.B. Dumas measure to calculate the density of the gas in the Dumas Method?

  • Volume of the vessel
  • Pressure of the gas
  • Masses of vapors generated within a vessel (correct)
  • Temperature of the gas
  • What does the Dumas Method rely on as one of its assumptions?

  • The molar volume changes with pressure
  • The volume of the vessel changes with temperature
  • The gas behaves non-ideally
  • The gas behaves ideally (correct)
  • What allows the calculation of molar mass from the density of the gas in the Dumas Method?

    <p>Molar volume of the gas at a certain temperature and pressure</p> Signup and view all the answers

    What happens if the hole is not punched in the cover before evaporating the sample in the Dumas Method?

    <p>The vapor formed does not experience atmospheric pressure</p> Signup and view all the answers

    What is the purpose of punching a hole in the cover before evaporating the sample in the Dumas Method?

    <p>To ensure the vapor formed experiences atmospheric pressure</p> Signup and view all the answers

    What is the significance of the mole in the context of determining molar mass using the Dumas Method?

    <p>It represents a measure of the number of particles</p> Signup and view all the answers

    Why is it important for the gas to behave ideally in the Dumas Method for determining molar masses?

    <p>To ensure accurate calculation of molar mass</p> Signup and view all the answers

    What is the role of the volume of the vessel in the Dumas Method for determining molar masses?

    <p>It affects the accuracy of the calculated molar mass</p> Signup and view all the answers

    How does the Dumas Method utilize the density of the gas to determine molar mass?

    <p>By relating it to the volume of one mole of the gas</p> Signup and view all the answers

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