The compressibility factor of a gas is defined as $Z = pV/(nRT)$. If attractive intermolecular forces dominate then $Z$ tends to be smaller than 1, and vice versa if repulsive forces dominate. In
Frontiers A Review on Synthesis of Methane as a Pathway for
Net-zero emissions chemical industry in a world of limited
Fuels, Free Full-Text
Review of the Decomposition of Ammonia to Generate Hydrogen
Physical dynamic double-network hydrogels as dressings to
Best practices in lithium battery cell preparation and evaluation
Why compressibility factor of areal gas is greater than unity at
Effects of mechanical pressure on anion exchange membrane water
Molecules, Free Full-Text
Heat pump - Wikipedia