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Why must helium be cooled to 4k before it will condense explain the fundamental process?
The single atoms of helium gas are small, and has small surface area. They must be cooled to 4K before their attractive forces cause them to condense.
Why must the inoculating loop be cooled first before touching a culture?
To avoid killing the test subjects before the test can begin.
Can a gas be returned to a liquid?
Yes. The three common phases of matter, solid, gas and liquid can be achieved by any material provided the right conditions, but different materials exist in different phases under the same conditions. The most common way that changes between these phases are achieved is by a change in temperature (although a change in pressure will also affect the state of matter). If a gas is cooled sufficiently, it will form a liquid. For example, if you set a glass of ice-water out, the outside of the glass will become wet. This wetness is water vapor which was in the air as a gas, but was cooled when it came into contact with the cold glass and condensed on the glass into a liquid. Even gases like Nitrogen, which makes up most of the air around us, can form a liquid, although it must be cooled to −196 °C.
In getting the temperature of tap water why must the bulb of the thermometer be submerged in the water?
Because you need to measure the temperature of water, not the air.
To obtain the station pressure you must normally make corrections for?
Temperature and gravity.
What is the temperature to whicha ir must be cooled at and constant pressure to reach saturation?
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What is meant by saturation temperature and saturation pressure?
The temperature and pressure of the atmosphere must be at that point or in an interval of values for the substance to be saturated. When mixing solutions, the temperature and pressure must be within a certain range for the substance to dissolve.
What is meant by the term dewpoint''''?
The temperature to which air must be cooled to become saturated.
Why must refrigerant in the suction line be slightly warmer than the saturation temperature?
Refrigerant in the suction line needs to be slightly warmer than the saturation temperature to prevent liquid refrigerant from entering the compressor. This temperature difference ensures that the refrigerant is fully vaporized before entering the compressor, preventing damage and maintaining efficiency.
What is the internal temperature that eggs must reach when cooking?
Eggs must reach an internal temperature of 160F (71C) when cooking to ensure they are safe to eat.
What is the percentage of relative humidity at its dew point?
At its dew point, the relative humidity is 100%. This means that the air is fully saturated with moisture, and any further cooling would result in condensation, forming dew. The dew point is the temperature at which air must be cooled for saturation to occur, indicating the maximum moisture content of the air at that temperature.
What is the internal temperature that eggs must reach while cooking?
Eggs must reach an internal temperature of 160F (71C) while cooking to be safe to eat.
How many degrees must the temperature rise to reach 0 degrees if morning temperature in antarctica is -52 degrees F?
52
What must be done to the hot gas leaving the compressor before it may be condensed?
Before the hot gas leaving the compressor can be condensed, it must be cooled to a temperature below its saturation point. This typically involves passing the gas through a heat exchanger or condenser where it loses heat to a cooling medium, such as air or water. Additionally, any superheating should be minimized to ensure efficient condensation. Once adequately cooled, the gas can then be condensed into a liquid phase.
What is the minimum internal temperature that eggs must reach during cooking?
The minimum internal temperature that eggs must reach during cooking is 160F (71C) to ensure they are safe to eat.
Why must injection molds must be cooled?
because during the injection molding process, the injection mold temperature will get higher and higher. So need cooling system to keep it suitable temperature.
Gas turns to liquid?
The gas must undergo a process called condensation to turn into a liquid. Molecules in the gas slow down and kinetic energy drops, also dropping the temperature. It most commonly occurs when a vapor is cooled and/or reaches its saturation limit, when molecular density in a gas arrives at its maximum limit.
