This is for a lab report and I am just confused about how I should regard volume because this issue is affecting 3 other questions. If you heat a gas in a closed flask that is connected to a manometer with water in it, the water level goes up (the arm open to atmosphere rises and arm connected to flask goes down). But it now asks about the volume, as I heat the gas. Does it change? Its a glass flask so obviously the volume in flask wont or cant change but the gas excerts pressure through a rubber tube connected to arm of manometer and that causes water level to rise.
So should I consider that the Volume of the gas does change? Because the gas has expanded into the tubing right? ..Or should I say V of gas does not change? Because the gas is in a rigid container that has fixed volu?
I know that increased T will increase P if V kept constant and that if P kept constant V must increase to compensate. But I dont understand how I should regard the gas in this apparatus. Is it constant or not?
Thanks for any help