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Gas pressure can be measured using several different instruments including:
Hydrostatic gauges - like a manometer or barometer
Piston gauges - like tire pressure gauges
Mechanical gauges - which use deflection of diaphragm, a capsule, or a set of bellows, which will change shape in response to the pressure of the region in question
Bourdon tube - a type of mechanical gauge that uses a coiled tube (Bourdon tube) that deflects with pressure
Electronic - including:
Piezo resistive Strain Gage
Capacitive
Magnetic
Piezoelectric
Optical
Potentiometric
Resonant
Thermal conductivity (conductivity of gasses changes with density - has to be calibrated to the gas)
Ionization (best for low pressure gases - has to be calibrated to the gas)
What else can I help you with?
When vapor pressure equals atomospheric pressure what is the liquid?
The Liquid will turn into gas. The boiling point corresponds to the temperature at which the vapor pressure of the liquid equals the atmospheric pressure. If the liquid is open to the atmosphere (that is, not in a sealed vessel), it is not possible to sustain a pressure greater than the atmospheric pressure, because the vapor will simply expand until its pressure equals that of the atmosphere.
The conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure?
its boiling
Can vapor sublimate?
No, a vapor is a gas. Sublimation is the process by which a solid becomes a gas (vapor).
What instrument measures water vapor?
dewpoint apparatus
Distillation is a process that can separate two liquids using what?
Distillation separates two liquids that have significantly different vapor pressures. The usual process uses heat to evaporate the gas with the higher vapor pressure. The gaseous form of the liquid is moved to a different container, where it is cooled, causing the gas to condense back into a liquid. In practical application, there is a limit to how completely two substances can be separated using distillation, because some of the substance with a lower vapor pressure will always evaporate along with the substance with higher vapor pressure.
What is the gas pressure above a liquid at equilibrium called?
The gas pressure above a liquid at equilibrium is called the vapor pressure. This is the pressure at which the rate of evaporation equals the rate of condensation, leading to a dynamic equilibrium between the liquid and its vapor.
How can one determine the actual vapor pressure of a substance?
To determine the actual vapor pressure of a substance, one can use a device called a vapor pressure thermometer. This device measures the pressure exerted by the vapor of the substance at a specific temperature. By comparing the vapor pressure readings at different temperatures, one can determine the actual vapor pressure of the substance.
What is the approximate vapor pressure when the gas condenses at 80oC?
The vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature. The vapor pressure depends on the temperature and the substance.
What does a pressure sensor do?
It measures the pressure of a fluid or gas.
Define vapor pressure thermometer?
A vapor pressure thermometer is a device that measures temperature by detecting the pressure of a vapor in a closed chamber. As temperature increases, the pressure of the vapor also rises, allowing for temperature measurement. These thermometers are often used in scientific and industrial applications where precise temperature control is necessary.
How does vapor pressure affect volume?
Vapor pressure is a measure of a substance's tendency to escape into the gas phase. When vapor pressure increases, more molecules escape from the liquid phase into the gas phase, leading to an increase in volume. Conversely, a decrease in vapor pressure can lead to a decrease in volume as fewer molecules transition into the gas phase.
Maximum pressure of vapor that builds up in a closed container?
The maximum pressure of vapor that can build up in a closed container is the vapor pressure of the substance at the given temperature. Once the vapor pressure is reached, the system reaches equilibrium and no further increase in pressure occurs. Any additional vapor will condense back into liquid form.
What is boiling in matter?
Phase shift from liquid to gas (vapor), where the vapor pressure is just equal to the atmospheric pressure.
The ideal gas law measures pressure in?
The ideal gas law measures pressure in pascals (Pa) or atmospheres (atm).
How is vapor pressure related to the boiling point?
Vapor pressure is related to the boiling point because the boiling point is the temperature at which the vapor pressure of a liquid equals the atmospheric pressure. When the vapor pressure of a liquid reaches the same pressure as the surrounding atmosphere, the liquid will boil and turn into a gas.
How does vapor pressure change with solubility?
solubility of a gas or solid?
What does the vapor pressure of water at 10 C compare with its vapor pressure at 50 C?
The vapor pressure of water at 10°C is lower than its vapor pressure at 50°C. As temperature increases, the vapor pressure of water also increases because more water molecules have enough energy to escape into the gas phase.
