Why dud the water rush into the flask when the flask was submerged in the cold water?- chemistry?

Question

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no i am talking about the combined gas law.

clamped the flask so that it is submerged.

thanks

Answer 1

I assume you're talking about the candle under the jar; it goes out and the water rushes in.

The conventional wisdom is that oxygen is used and so the volume of gas reduces.  This doesn't stand up to scrutiny because you are also producing CO2 and water vapour.  My understanding of it is that you are heating up the air in the jar.  While the candle is burning, the level of water goes down in the jar as the air expands due to being heated.  When the candle goes out, the air cools and contracts, drawing in water.