Sally has an in?atable doll ?lled with helium at the circus. Jane has an identical doll ?lled with argon at the circus. They sit next to each other and discuss chemistry. They argue over whose balloon has gas molecules zipping around at greater average velocities. Resolve the argument.
1. It depends on the volume of the identical balloons.
2. Argon has the greater velocity.
3. The velocities are the same because the balloons are at the same temperature.
4. Helium has the greater velocity.
5. The velocities cannot be discussed because gases don't have velocities - they have pressures.