Problem: A gas-phase reaction was run in an apparatus designed to maintain a constant pressure.Predict whether w is positive, negative, or zero.

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Establish the formula of work and determine the sign of the work for the transformation given

Recall that work can be calculated as:

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A gas-phase reaction was run in an apparatus designed to maintain a constant pressure.

A piston applies pressure to a cylinder containing two O2 molecules and two N2 molecules.  This leads to four NO molecules.

Predict whether w is positive, negative, or zero.

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