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Cold air has more molecules occupying a cubic centimeter of space then warm air therefore it has a what pressure?
Cold air has more molecules occupying space than warm air, therefore it has high pressure.
How many molecules fit in a one centimeter box?
The number of molecules that can fit in a one centimeter box depends on the substance being considered. For example, in a gas like oxygen at room temperature and pressure, approximately 2.5 x 10^19 molecules would fit in a one centimeter cubic box. In contrast, solids or liquids have much denser packing, leading to a significantly higher number of molecules. Therefore, the specific number varies widely based on the material's state and density.
Is the pressure decrease or increase with altitude?
Pressure is due to the number of molecules hitting you or your instrument. As you go up in altitude, there are less molecules hitting you, i.e., the pressure decreases. The higher you go, you are getting thinner atmosphere, which means there are less molecules available, so the pressure is lower. Air molecules are more abundant closer to the surface, and therefore the molecules are closer together, i.e. higher pressure.
What happens to the movement of molecules when pressure decreases?
When pressure decreases, the molecules have more space to move around and therefore tend to move faster and more freely. This can lead to an increase in their average kinetic energy.
What makes the waterevaporate?
Water has a large vapor pressure compared to air. Water molecules therefore readily move into the air.
Cold air has more molecules occupying a cubic centimeter of space then warm air therefore it has a what pressure?
Cold air has more molecules occupying space than warm air, therefore it has high pressure.
How many molecules are in 1 cubic centimeter of air?
The answer will depend on the temperature and pressure.
How many molecules fit in a one centimeter box?
The number of molecules that can fit in a one centimeter box depends on the substance being considered. For example, in a gas like oxygen at room temperature and pressure, approximately 2.5 x 10^19 molecules would fit in a one centimeter cubic box. In contrast, solids or liquids have much denser packing, leading to a significantly higher number of molecules. Therefore, the specific number varies widely based on the material's state and density.
How does adding a solute affect the vapor pressure?
Adding a solute to a solvent lowers the vapor pressure of the solution compared to the pure solvent. This is due to the solute molecules occupying some of the surface area that would have been available for solvent molecules to evaporate. As a result, fewer solvent molecules are able to escape into the gas phase, leading to a decrease in vapor pressure.
How does diffusion show that molecules are always moving?
How? Molecules move from an area of higher concentration to an area of lower concentration. When the concentration decreases (be it determines by a measure of pressure) in a unit volume; that indicates there are less molecules occupying that given space. So they must have gone somewhere...
Why is vapor pressure of solution of glucose in water lower than that of water?
vapour pressure of a solution containing non volatile solute if a non volatile solute is added to volatile solvent the vapour pressure of the solution is lower than the vapour pressure of pure component glucose is non volatile and water is volatile The surface of a pure solvent is populated only by solvent molecules therefore its easier for them to escape . but when glucose is present only solvent molecules volatile They alone can escape to build up the vapor pressure of the solution by Vijay Iyer
Is the pressure decrease or increase with altitude?
Pressure is due to the number of molecules hitting you or your instrument. As you go up in altitude, there are less molecules hitting you, i.e., the pressure decreases. The higher you go, you are getting thinner atmosphere, which means there are less molecules available, so the pressure is lower. Air molecules are more abundant closer to the surface, and therefore the molecules are closer together, i.e. higher pressure.
What is the pressure against vacuum?
There is no pressure against a vacuum since a vacuum is defined as a space devoid of matter and therefore no gas molecules to exert pressure.
Why does pressure increases when force is exerted?
If the temperature of the gas is increased, the average kinetic energy of its molecules increases. Therefore, the molecules hit the wall "harder" and also more frequently. The total force due to the collisions is greater. Therefore the pressure increases.
How the vapour pressure of ether is greater than the vapour pressure of water?
Water molecules are held together by hydrogen bonds which are relatively strong. Ether molecules do not have such intermolecular forces holding molecules together. Therefore, it is easier for ether molecules to escape as a vapor, and this is why the vapor pressure of ether is greater than that of water.
What does the air pressure do when a sealed bag is compressed and more space is available in the bag?
When a sealed bag is compressed and more space is available in the bag, the air pressure inside the bag decreases. This is because the air molecules are now occupying a larger volume, leading to a lower pressure.
What causes pressure?
The weight of the air The distance between particles of a gas determines the pressure. The distance can be decreased and the pressure therefore increased by either increasing the amount of particles of gas in the container, or by reducing the size of the container.
