Mole Ball and Box

This beach ball and this box displace a volume of 22.4 L, the molar volume of an ideal gas at STP. 

Curriculum Notes 

These teaching aids can be used in a general chemistry course when gas laws are being integrated into stoichiometry calculations. The ball can be passed around the room.

Lead Time 
One day of lead time is required for this project.
Discussion 

A mole of ideal gas at standard temperature and pressure occupies a volume of 22.4 L. 

Materials 
  • mole ball
  • mole box
Procedure 

Exhibit these objects while lecturing about molar volume at STP. The ball can be passed around the room. 

© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group