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# Particle Velocity

APCHEM-18NRIM

Based on the following information, which of the following gases would have the highest average particle velocity when all gases are placed in a rigid container?

Gas Carbon Dioxide Ethane Ammonia
Molar Mass (g/mol) 40.0 30.0 17.0
Temperature ($^\circ$C) 27.0 27.0 27.0
Pressure (atm) 2.0 3.0 2.0
A

Carbon dioxide.

B

Ethane ($C_2H_6$).

C

Ammonia ($NH_3$).

D

All would have the same average particle velocity.