# State the relationship between air temperature and pressure

### Pressure/Density/Temperature relationship - ATP Forum Early scientists explored the relationships among the pressure of a gas (P) and its and its volume is measured at atmospheric pressure and constant temperature. . We can state Charles's and Gay-Lussac's findings in simple terms: At. If you had a jar of air and heated it, the temperature would go up, and the The equation of state defines the relationship between pressure. The earth's gravity acts on air molecules to create a force, that of the air pushing on the earth. The Gas Laws: Pressure Volume Temperature Relationships Boyle's law or the pressure-volume law states that the volume of a given amount of.

For laboratory work the atmosphere is very large. A more convient unit is the torr. A torr is the same unit as the mmHg millimeter of mercury.

It is the pressure that is needed to raise a tube of mercury 1 millimeter. The Pressure-Volume Law Boyle's law or the pressure-volume law states that the volume of a given amount of gas held at constant temperature varies inversely with the applied pressure when the temperature and mass are constant. Another way to describing it is saying that their products are constant. When volume goes up, pressure goes down.

From the equation above, this can be derived: This equation states that the product of the initial volume and pressure is equal to the product of the volume and pressure after a change in one of them under constant temperature. For example, if the initial volume was mL at a pressure of torr, when the volume is compressed to mL, what is the pressure?

### PRESSURE AND TEMPERATURE RELATIONSHIP

Plug in the values: The Temperature-Volume Law This law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature. V Same as before, a constant can be put in: Also same as before, initial and final volumes and temperatures under constant pressure can be calculated.

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The Pressure Temperature Law This law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature.

P Same as before, a constant can be put in: The Volume Amount Law Amedeo Avogadro Gives the relationship between volume and amount when pressure and temperature are held constant.

## Pressure and Temperature

Remember amount is measured in moles. Also, since volume is one of the variables, that means the container holding the gas is flexible in some way and can expand or contract. If the amount of gas in a container is increased, the volume increases. Because there is less mass in the can with a constant volume, the pressure will decrease. This pressure decrease in the can results in a temperature decrease. The contents coming out of the can also cool in temperature but for another reason. Outside of the can the volume is not held constant. Thus the contents are free to expand when they move from the high pressure in the can to the low pressure outside of the can.

### thermodynamics - Relation between temperature and pressure? - Physics Stack Exchange

Expansional cooling causes the contents coming out of the can to cool. This effect can be noticed in spray-on deodorants.

In the second example, a compressor is shown. This is used in appliances such as refrigerators.

What is the relationship between air temperature and air pressure

The refrigerant air is pressurized into the compressor meaning the pressure increases as more air is squeezed into the same volume. This causes a temperature increase. With time, this heat is lost to the environment through coils. 