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Which phenomenon causes non-ideal gas behavior at high pressures and low temperatures in molecular systems?

A)Increased molecular kinetic energy overcomes attractions
B)Significant molecular volume reduces free space
C)Decreased collision frequency lowers pressure
D)Reduced intermolecular attraction causes expansion

💡 Explanation

At high pressures and low temperatures, significant molecular volume becomes a factor because molecules are closer, reducing free space and increasing repulsive forces, deviating from ideal gas laws. Therefore the primary cause is the molecular volume unlike ideal gas which assumes negligble volume, rather than energy changes or attraction changes.

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