in 2 to 5 sentences describe a scenario using the combined gas law in which changes occur in the pressure and temperature of an enclosed gas but the volume does not change.

The scenario could involve a sealed container of gas at a constant volume. As the temperature of the gas is increased, the pressure will also increase due to the particles in the gas having more kinetic energy and colliding with the walls of the container more frequently. If the temperature is then decreased, the pressure will decrease as well because the particles have less kinetic energy and collide with the walls less frequently. Throughout these temperature changes, the volume of the container remains constant, demonstrating the relationship between pressure, temperature, and volume as described by the combined gas law.