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Q: When a gas expands to a region of low pressure its temperature?
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When a gas expands to a region of low pressure what happen to its temperature?

The temperature drops. When a real (non ideal) gas expands ( in such a way that it does not take in heat from the environment- so called adiabatic) for example when hot air rises into a low pressure region the gas will cools. Real gases when they expand freely cool, this is the basis of the refrigerator (Joule Thomson effect). The explanation is that the separation of gas molecules involves "work" done against intermolecular forces which leads to a reductio in the kinetic of the molecules, hence the observed temperature.


In a closed containerwhat effects does pressure have on a gas volume and density?

The gas pressure in a closed container increases with volume and increased temperature. Likewise, the pressure will decrease with decreased temperature.


Do gases expand in heat?

Yes. If the temperature increases, the gas expands (assuming the pressure remains constant).


What happens to a gas heated in cylinder?

the gas expands and exerts more pressure on the sides of the cylinder. Basically, the pressure goes up due to a temperature increase.


Why do balloons expands when its temperature increases?

Balloons are filled with gas and gas expands when temperature increases. Gas also condenses when the temperature is lowered. This is due to Charles' law.


What results from increasing the temperature of a gas?

The gas expands.


What will happen to pressure when gas expands and volume increases?

As the pressure increases, the volume wil decrease.


What happens to the volume of a gas when its temperature is raised and its pressure is cept constant?

Expands because there's more energy for movement.


What happens to the gas in a rising balloon?

It expands as the surrounding air pressure lessens. It also cools along with the ambient temperature.


How does the temperature of gas change when it is compressed when it expands?

Gas is a loosely bound group of molecules that have changed phase from solid to liquid to gas through an increase in thermal energy. Once it has reached the gas phase, heating gas can increase its temperature because the energy will not go into the potential energy of a phase change, but instead the kinetic energy of phase change.


What gas expands when heated?

all gases. The volume of a gas is directly proportional to the temperature, and inversely proportional to pressure. Maybe you mean air, but air is a mixture of gases


What is the pressure of the air, in atm, in the lungs when the gas expands to 175.0 mL at a body temperature of 37 ∘C, and the amount of gas remains constant?

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