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Is boling point a extensive or intensive property?
Boiling point is an intensive property. Intensive properties are independent of the amount of substance present, meaning that the boiling point remains the same regardless of how much of the substance is present. For example, the boiling point of water is 100°C at standard atmospheric pressure, whether you have a cup or a liter of water.
What determines the phase of a substance?
The phase of a substance is determined by its temperature and pressure, as well as the intermolecular forces present within the substance. Changes in temperature and pressure can cause a substance to transition between solid, liquid, and gas phases.
Does a pure substance always boil at a fixed temperature?
Yes, a pure substance boils at a fixed temperature under a specific pressure. This boiling point is characteristic of the substance and remains constant as long as the pressure is maintained. However, if impurities are present or if the pressure changes, the boiling point can vary.
What are properties that are unique to a substance?
Unique properties of a substance, often referred to as its "characteristic properties," include its boiling point, melting point, density, solubility, and specific heat capacity. These properties are intrinsic to the substance and can help identify it, regardless of the amount present. For example, water has a boiling point of 100°C at standard atmospheric pressure, which distinguishes it from other liquids. Additionally, chemical properties, such as reactivity with acids or bases, also contribute to a substance's uniqueness.
Does pressure increase or decrease with altitude?
Because as you climb higher there is less air above you pressing down on you with its weight.
What substance present in your body balances the atmospheric pressure acting on us?
The substance that helps balance atmospheric pressure in the body is nitrogen. Nitrogen is present in the air we breathe and enters our bloodstream, helping equalize pressure within our bodies with the external atmospheric pressure.
What is the total pressure gauge pressure plus atmospheric pressure?
Total pressure is equal to the sum of gauge pressure and atmospheric pressure. Atmospheric pressure is always present and contributes to the total pressure measurement.
What is difference between extensive and intensive properties?
* Intensive - Properties that do not depend on the amount of the matter present. ** Color ** Odor ** Luster - How shiny a substance is. ** Malleability - The ability of a substance to be beaten into thin sheets. ** Ductility - The ability of a substance to be drawn into thin wires. ** Conductivity - The ability of a substance to allow the flow of energy or electricity. ** Hardness - How easily a substance can be scratched. ** Melting/Freezing Point - The temperature at which the solid and liquid phases of a substance are in equilibrium at atmospheric pressure. ** Boiling Point- The temperature at which the vapor pressure of a liquid is equal to the pressure on the liquid (generally atmospheric pressure). ** Density - The mass of a substance divided by its volume * Extensive - Properties that do depend on the amount of matter present. ** Mass - A measurement of the amount of matter in a object (grams). ** Weight - A measurement of the gravitational force of attraction of the earth acting on an object. ** Volume - A measurement of the amount of space a substance occupies. ** Length
About What fraction of atmospheric pressure greatest at the surface of earth?
At the surface of the Earth, about 99% of the atmosphere's total mass is located below 32 km. This is where most of the atmospheric pressure is concentrated. Therefore, the greatest fraction of atmospheric pressure is present at the Earth's surface.
What are the considerations must be made when examining the boiling point?
When examining the boiling point, consider the type of substance (e.g. organic, inorganic), intermolecular forces present, atmospheric pressure, and purity of the substance. These factors can affect the boiling point of a substance.
What determines the phase of a substance?
The phase of a substance is determined by its temperature and pressure, as well as the intermolecular forces present within the substance. Changes in temperature and pressure can cause a substance to transition between solid, liquid, and gas phases.
What fraction of atmospheric pressure at sea level is atmospheric at La Paz?
La Paz, Bolivia, is situated at a high altitude of approximately 3,650 meters (about 11,975 feet) above sea level. At this elevation, the atmospheric pressure is significantly lower than at sea level, typically around 60-65% of atmospheric pressure at sea level. Therefore, the fraction of atmospheric pressure at sea level that is present in La Paz is roughly 0.6 to 0.65.
Is vapour pressure intensive property?
Yes, vapor pressure is an intensive property because it does not depend on the amount of substance present. It is characteristic of the specific substance at a given temperature and does not change with the quantity of the substance.
How does pressure change as the distance from earth increases?
As distance from Earth increases, the atmospheric pressure decreases. This is because there are fewer air molecules present at higher altitudes, leading to lower pressure.
What is a space that has no matter in it?
A vacuum is a space devoid of matter, where the pressure is lower than atmospheric pressure. It is commonly found in outer space, with very few particles present.
What happens to atmospheric pressure as altitude increase?
This would actually be a simple answer: Pressure decreases. Simply because of the fact that as altitude increases, the less air there is on top of you, and the lower the pressure would be.
Where would atmospheric pressure be greatest at sea level on a mountaintop at the altitude at which planes fly or at the outer edge of the atmosphere?
At sea level, atmospheric pressure would be greatest because of the weight of the entire column of air above that point. As you move higher up a mountain, atmospheric pressure decreases due to the lower column of air above. However, at the outer edge of the atmosphere, the pressure drops significantly as there is almost no air present in this region.
