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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.
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When the portion of a pressure enthalpy diagram is beneath the saturation curve then?
the substance is typically in a two-phase region, where it exists simultaneously as both a liquid and a vapor. This means that the substance is at its saturation temperature and pressure.
Imagine that bubbles begin to form a sample of liquid but the temperature did not change.what must have happened to cause this change?
The decrease in pressure caused the bubbles to form in the liquid sample without changing the temperature. This could occur, for example, if the liquid was moved to a region of lower pressure, releasing dissolved gases as bubbles.
The pressure needed to stop osmosis is?
The pressure needed to stop osmosis is called osmotic pressure. It is the minimum pressure required to prevent the flow of solvent from a region of lower solute concentration to a region of higher solute concentration across a semipermeable membrane.
How are conditions of pressure and temperature at which two phases coexist in equilibrium shown on a phase diagram?
On a phase diagram, the conditions of pressure and temperature at which two phases coexist in equilibrium are represented by a line. This line is called the phase boundary or phase equilibrium line. It separates the regions where the two phases exist in equilibrium from the region where only one phase is present.
Using the phase diagram for CO2, what phase is carbon dioxide in at 12 atm pressure and -40 C apex?
At 12 atm pressure and -40°C, carbon dioxide is in the solid phase according to the phase diagram. This corresponds to the region of the phase diagram where CO2 exists in the solid state at those specific pressure and temperature conditions.
What could a region that covers two states and has a similar pressure and temperature be called?
A common term used to describe a region that covers two states with similar pressure and temperature is an "iso-thermal region." This indicates that the area experiences consistent temperatures across the two states.
South Pole low-pressure region?
The South Pole is a low pressure region. Cold temperature areas tend to be low pressure while tropical regions are commonly high pressure.
Is wind related to air temperature and air pressure?
A low pressure region should mean that the region is low in air. The air from the surrounding region (which is comparatively at higher pressure) moves into this low pressure region creating a wind. So, wind is the movement of air from a high pressure region into a low pressure region. Warm air is lighter than cold air. Warm air being lighter moves upward creating a low pressure region. So, wind could also be a movement of air from cooler to warmer region.
Will a cool region underneath a cloud have higher pressure than a region without a cloud cover?
Yes, a cool region underneath a cloud can have higher pressure than a region without cloud cover. This is because the cooling effect of the cloud can lead to a decrease in temperature and an increase in air density, which in turn can result in higher pressure at the surface.
What is the connection between temperature air pressure and wind?
A low pressure region should mean that the region is low in air. The air from the surrounding region (which is comparatively at higher pressure) moves into this low pressure region creating a wind. So, wind is the movement of air from a high pressure region into a low pressure region. Warm air is lighter than cold air. Warm air being lighter moves upward creating a low pressure region. So, wind could also be a movement of air from cooler to warmer region.
What is set of temperature wind pressure and moisture conditions for a certain region that moves as unit?
weather system
A region of air that covers two states and has a similar pressure and temperature could be considered an?
air mass
Is Atop Mount Everest low pressure region or high pressure region?
low pressure
Where does heat transfer?
From higher temperature region to lower temperature region.
When the portion of a pressure enthalpy diagram is beneath the saturation curve then?
the substance is typically in a two-phase region, where it exists simultaneously as both a liquid and a vapor. This means that the substance is at its saturation temperature and pressure.
Why do weather balloons pop at certain altitudes?
As it rises up it goes into a region of lower pressure (pressure decreases in altitude) ans as it enters this region the gases in the balloon expand due to a thermodynamic relationship. Pressure and volume of the gas are related. PV= nRT (rearranged to P= nRT/V). So as it goes up in altitude the pressure goes down thus making the volume increase causing it to pop.
Does nuclear fusion happen in the convection zone?
No, nuclear fusion does not occur in the convection zone of a star. Fusion reactions primarily take place in the core region of a star, where the temperature and pressure are high enough to sustain the nuclear reactions that power the star. The convection zone is a region of the star where heat is transported through the movement of gas, but fusion does not occur there.
