The bottom of the tank is covered with chunks of solid carbon dioxide that turns to gas and fills the bottom of the tank. you can't see the carbon dioxide gas, but you can infer its presence from the floating balloons. if a balloon is pushed into the tank so that it is immersed in the carbon dioxide gas layer, it is pushed upward the buoyant force exceeds the weight force. this is because select the best answer from the choices provided. view available hint(s) o the cold carbon dioxide gas causes the balloons to expand. o the carbon dioxide gas is less dense than the air that fills the balloons. o the carbon dioxide gas is more dense than the air that fills the balloons. o the cold carbon dioxide gas causes the balloons to shrink.