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Which symbol indicates that a substance is a gas at room temperature and normal atmospheric pressure?
STP (standard gas temperature and pressure) for ideal gases obeying PV=nRT:
n = number of moles
R = universal gas constant = 8.3145 J/mol K
N = number of molecules
k = Boltzmann constant = 1.38066 x 10-23 J/K = 8.617385 x 10-5 eV/K
k = R/NA
NA = Avogadro's number = 6.0221 x 1023 /mol
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If a substance is kept at atmospheric pressure what is its phase of matter completely depend on?
The phase of matter a substance is in at atmospheric pressure is primarily dependent on its temperature. At a certain temperature, known as its boiling point, a substance will transition from a liquid to a gas. Conversely, at another temperature, known as its freezing point, a substance will transition from a liquid to a solid.
What is the temperature at which a substance in the liquid state becomes a gas?
The temperature at which a substance in the liquid state becomes a gas is known as the boiling point. It is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure, allowing the substance to transition into the gas phase.
How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
What is the relationship between the normal boiling point and vapor pressure of a substance?
The normal boiling point of a substance is the temperature at which its vapor pressure equals the atmospheric pressure. In other words, the higher the vapor pressure of a substance, the lower its normal boiling point will be.
What temperature is it impossible to liquify a substance no matter the pressure?
The critical temperature is the temperature at which a substance cannot exist in the liquid phase, regardless of the pressure applied. Beyond this temperature, the substance will be in the vapor phase.
A substance will exist as a gas at ambient temperature and pressure?
A substance will exist as a gas at ambient temperature and pressure if its boiling point is below the ambient temperature and its vapor pressure exceeds the atmospheric pressure at that temperature.
If a substance is kept at atmospheric pressure what is its phase of matter completely depend on?
The phase of matter a substance is in at atmospheric pressure is primarily dependent on its temperature. At a certain temperature, known as its boiling point, a substance will transition from a liquid to a gas. Conversely, at another temperature, known as its freezing point, a substance will transition from a liquid to a solid.
What is the temperature at which a substance in the liquid state becomes a gas?
The temperature at which a substance in the liquid state becomes a gas is known as the boiling point. It is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure, allowing the substance to transition into the gas phase.
Choose the best definition of STP?
a term that indicates a combined measurement of standard atmospheric pressure and room temperature. A+
How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
What is the relationship between the normal boiling point and vapor pressure of a substance?
The normal boiling point of a substance is the temperature at which its vapor pressure equals the atmospheric pressure. In other words, the higher the vapor pressure of a substance, the lower its normal boiling point will be.
Temperature a substance will change from liquid to gas?
The temperature at which a substance changes from liquid to gas is known as its boiling point. At this point, the vapor pressure of the liquid equals the atmospheric pressure, allowing it to overcome intermolecular forces and transition to a gaseous state.
What is the normal melting point?
The normal melting point is the temperature at which a substance changes from a solid to a liquid at standard atmospheric pressure (1 atm). The normal melting point is a characteristic physical property of a substance and can vary depending on the specific material.
What temperature is it impossible to liquify a substance no matter the pressure?
The critical temperature is the temperature at which a substance cannot exist in the liquid phase, regardless of the pressure applied. Beyond this temperature, the substance will be in the vapor phase.
What substance present in your body balances the atmospheric pressure actin on us?
what substance present in your body balances the atmospheric pressure action on us
What is the temperature of liquid nitrogen at atmospheric pressure is it always -196C or can it be colder?
Well, let's think about it. What is the temperature of liquid waterat atmospheric pressure ? Is it always 99°C or can it be colder ?Seems like the temperature of any liquid substance can be anywherebetween its boiling point and its freezing point.
What term defines the temperature at which the vapor pressure of the liquid equals the atmospheric pressure?
The temperature at which the vapor pressure of the liquid equals the atmospheric pressure is called THE BOILING POINT.
