Problem: A closed system.If the piston is pulled upward so that it sits halfway between the position shown and the top of the cylinder, is the system still closed?

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In this problem, we are asked if the system is still closed even if the piston is pulled upward so that it sits halfway between the position shown and the top of the cylinder.

Recall that:

  • Our system is simply our chemical reaction. Anything outside of that is considered our surroundings
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Problem Details

A diagram shows a piston as containing a system consisting of H2 (gas) and O2 (gas).  The surroundings are the cylinder, piston, and everything else.  Energy can enter or leave the system as heat or as work done on the piston, but matter cannot enter or leave the system.
A closed system.

If the piston is pulled upward so that it sits halfway between the position shown and the top of the cylinder, is the system still closed?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Internal Energy concept. You can view video lessons to learn Internal Energy. Or if you need more Internal Energy practice, you can also practice Internal Energy practice problems.