What happens when washing soda fused with excess sand (sio3)?

Calcium chloride +gold(1) oxide—>

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?