Which process causes helium to diffuse through polymers?

💡 Explanation

Quantum mechanical tunneling significantly increases helium diffusion through polymers because helium's small mass gives it a non-negligible probability of tunneling through potential barriers between polymer chains; therefore, diffusion is accelerated, rather than convection dominating due to size.

• Which outcome regarding hydrogen consumption results when a water-gas shift reactor's equilibrium constant (K) drastically decreases?
• Which outcome occurs when a high-powered laser is focused on a transparent dielectric material, causing extremely localized heating?
• Which risk increases when a cryogenic storage dewar warms above its critical temperature?
• Which consequence results when excessive mass accumulates at galactic centers?
• Which outcome results when a star exhausts its hydrogen fuel at its core during stellar nucleosynthesis?
• Which outcome occurs the instantaneous reactant concentration exceeds needed activation energy?