When liquid nitrogen is placed in a sealed container, the pressure of the container increases until the container explodes. The energy released in the explosion can be used to launch a bucket high into the air. Analyzing the experiment using the ideal gas law gives results that are inconsistent with observations. Use of the van der Waals equation yields reasonable results.
Teaching Chemistry and Making a Difference
The March 2014 issue of the Journal of Chemical Education is now available online to subscribers at http://pubs.acs.org/toc/jceda8/91/3. The March issue features: changing the curriculum to make connections, forensic chemistry, computer-based learning, hands-on activities and labs for introductory chemistry, teaching physical chemistry, organic and biochemistry labs, and the mole concept.