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1.)

Collisions between particles of a gas and the walls of the container cause the pressure in a closed container of gas

2.)

Factors that affect the pressure of an enclosed gas are its temperature, volume, and number of particles

3.)

Raising the temperature of a gas will increase its pressure if the volume of the gas and number of particles are constant

4.)

Reducing the volume of a gas increases its pressure if the temperature and number of particles is constant

5.)

Increasing the number of particles will increase the pressure of a gas if the temperature and the volume are constant