work - A common type of work associated by a chemical...

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A common type of work associated by a chemical process is through gas expansion or compression. An example  that you have experienced is the energy produced from the combustion of gasoline. Gasoline combustion is used  to create expanding gases in the cylinders of your car's engine that push out the pistons. This motion is then  translated into the motion of the car. Let's look at the work associated with moving a piston. Now remember that work is defined as a Force applied over a distance is |Work| = |F ∙  h|, Δ where  h = h Δ final  - h initial . We write the absolute value of work since we still need to make sure the sign of  work agrees with our earlier definitions. Using the definition of  p = F/A , and recognizing  A ∙  h Δ  as the  change in volume of the cylinder, we can write the work associated with moving a piston a distance 
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