Question

There are 300 light particles in an airtight container. Which adjustment would increase the speed of the particles?

keeping the pressure constant and increasing the temperature
keeping the volume constant and replacing the light particles with heavy particles
keeping the volume constant and cooling the container
keeping the temperature constant and increasing the container volume

Answer 1

To increase the speed of the light particles in an airtight container, the best option is:

**Keeping the pressure constant and increasing the temperature.**

Increasing the temperature of a gas increases the average kinetic energy of the particles, which translates to an increase in their speed. The other options either keep the parameters unchanged or decrease the average energy of the particles, which would not lead to an increase in speed.