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Helium is called a pernament gas because 1. it cannot be made into a solid or liquid under any condition 2. it's intermolecular forces are too small to allow it to liquify  3. it's critical temperature is below room temperatue 4. it's normal boiling point is below room temperature 5. it doesnt' have a triple point

Helium is called a pernament gas because 1. it cannot be made into a solid or liquid under any condition 2. it's intermolecular forces are too small to allow it to liquify  3. it's critical temperature is below room temperatue 4. it's normal boiling point is below room temperature 5. it doesnt' have a triple point

Introductory Chemistry: An Active Learning Approach
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter15: Gases,liquids, And Solids
Section: Chapter Questions
Problem 54E
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Helium is called a pernament gas because

1. it cannot be made into a solid or liquid under any condition

2. it's intermolecular forces are too small to allow it to liquify 

3. it's critical temperature is below room temperatue

4. it's normal boiling point is below room temperature

5. it doesnt' have a triple point

Expert Solution
Step 1

Permanent gas -

  • Gases that have critical temperature below room temperature.
  • They cannot be liquified at room temperature and any amount of pressure.
  • Molecules of these gases are inert.

 

 

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