Gaseous State Introduction: States of Matter

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Questions and Answers

What is the fourth state of matter, which exists only at very high temperatures?

  • Plasma (correct)
  • Gas
  • Solid
  • Liquid

At ordinary temperature and pressure, in which state does water exist?

  • Plasma
  • Solid
  • Gas
  • Liquid (correct)

At what temperature can water be passed into the gaseous state?

  • 100°C (correct)
  • 50°C
  • -273°C
  • 0°C

What is the point at which three phases of a component exist together called?

<p>Triple point (A)</p> Signup and view all the answers

At what pressure and temperature does water have all three phases in equilibrium?

<p>4.58 mm Hg and 0.0098°C (B)</p> Signup and view all the answers

What is the relationship between temperature and the conversion of gaseous state to the liquid and solid states?

<p>As temperature decreases, the gaseous state can convert into the liquid and then into the solid state. (D)</p> Signup and view all the answers

How is the mass of a gas related to its number of moles?

<p>n = w/M, where n is the number of moles, w is the mass in grams, and M is the molar mass. (A)</p> Signup and view all the answers

Which unit is used for expressing the pressure of a gas with reference to force per unit area of the walls?

<p>Torr (D)</p> Signup and view all the answers

What is the relationship between Celsius and Fahrenheit scales?

<p>0°C = 32°F and 37°C = 98.6°F (D)</p> Signup and view all the answers

What does a standard or normal atmospheric pressure exerted by a mercury column measure at 0°C?

<p>76 cm (C)</p> Signup and view all the answers

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