Numerous small hard spheres are placed in a container as shown in the animation (position in centimeters and time is in seconds). Which of the following animations best approximates (qualitatively) an ideal gas? Note: Simulations will run for 20 seconds. 

Numerous small hard spheres representing  molecules are placed in a container as shown in the animation (position in centimeters and time is in seconds). Here the relative masses of the molecules are RED 80 : GREEN 20 : BLUE/BLACK 1. Which particle type has the greatest average kinetic energy? Note: Simulations will run for 20 seconds. Start

Two identical containers with identical particle types and numbers are placed back to back and separated by a moveable barrier as shown in the animation (volume is in 10^-15m³, pressure is in 10^-9Pa, and temperature is in Kelvin).  Initially the barrier is in static equilibrium. If you doubled the number of particles in the right container, what would the temperature of the left container be in order to regain equal volumes? 

After a few seconds Set N Right and view the animation. The animation will run for about 15 seconds. Test your results by using Set T Left after you add particles to the right container. Start

A spherical air-filled balloon expands due to a temperature change as shown in the animation (position is in centimeters and time is in seconds). What is the ratio of the final to the initial pressure of the air in the balloon? Start

A spherical air bubble rises in a large pool of water as shown in the animation (position is in meters and time is in seconds). What is the ratio of the final to the initial temperature of the air in the balloon? Start

A spherical air bubble rises in a large pool of unknown liquid as shown in the animation (position is in meters and time is in seconds). What is the density of this fluid? Start