Kinetic Molecular Theory

A gas is seen as a collection of molecules or individual atoms that are in constant motion. The Kinetic-Molecular Theory tries to use data of real gases to predict how an ideal gas would behave if they existed.  

Examining the Kinetic-Molecular Theory

Concept: Understanding the Kinetic-Molecular Theory

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Ideal gases are imaginary and don’t actually exist. However, if they did exist then there would be certain characteristics that a gas would need to possess in order to be an ideal gas. 

Example: Two identical 10.0 L flasks each containing equal masses of O2 and N2 gas are heated to the same temperature. Which of the following statements is/are true?  

The flask with the oxygen gas will have a greater overall pressure.

 

The nitrogen and oxygen gases will have the same average speed or velocity.

 

The nitrogen and oxygen gases will have the same average kinetic energy.

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