4. A sealed container of gas, starting at standard atmospheric pressure(101 kPa) is heated. ) With reference to the relevant models or equations, describe what happens to the motion of the particles in the container. )As the gas is heated, state and explain how the pressure exerted onthe side of the container will change. Give your explanation in termsof the particles of gas. The pressure in the container reaches 220 kPa. If the starttemperature was 20 °C, give the final temperature. The volume of the container is 1.2 dm3. Calculate the number of-moles of gas present.