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← ScienceWhich outcome occurs when excessively vibrating a gas sample excites rotational molecular modes?
A)Increased collisional energy transfer✓
B)Decreased van der Waals forces
C)Increased radiative heat transfer
D)Decreased specific heat capacity
💡 Explanation
Increased molecular vibration will cause increased collisional energy transfer, because now kinetic energy from vibration is easily exchanged. Therefore, the gas sample heats more quickly, rather than an increase in thermal radiation or the subtle effects of vdW reduction as alternative processes alone don't explain it.
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