what is the answer
Total pressure is equal to the sum of gauge pressure and atmospheric pressure. Atmospheric pressure is always present and contributes to the total pressure measurement.
boiling
I'm not even sure what this question is supposed to mean. On the off chance that it might be the answer you're looking for: A liquid becomes a gas when its vapor pressure becomes equal to the atmospheric pressure.
The pressure inside will be the same as what the atmospheric pressure was when the lid was closed as long as no heat is added or removed.
Actually boiling is a point where the vapour pressure of any liquid (example: water) becomes equal to the surrounding pressure.
The force is equal to when you experience these feelings.
isoteric
An isobar is a line connecting points of equal atmospheric pressure on a pressure map.
When a liquid is boiling, its vapor pressure is equal to the atmospheric pressure in the room. This is called equilibrium.
The temperature at which a substance in the liquid state becomes a gas is known as the boiling point. It is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure, allowing the substance to transition into the gas phase.
The bar is a unit of pressure equal to 100 kilopascals (100 kPa), and roughly equal to the atmospheric pressure on Earth at sea level.
The temperature at which the vapor pressure of the liquid equals the atmospheric pressure is called THE BOILING POINT.