What happens to the temperature of an ideal gas that is expanded adiabatically? It can go up or down   It stays the same   It decreases   It increases   It increases if heat is entering the gas

For an ideal gas of constant temperature, if the pressure is increased, the volume will increase as well

The number of collisions between helium atoms with the walls of the container per unit time is... A. Fixed when added CO2 gas into the container at a constant temperatureB. Decreases when the container is reduced in halfC. Increases in size when the temperature dropsD. Decreases as the average kinetic energy per molecule increasesE. Increases in size when CO2 is added to a container at a constant temperature