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Q: How does pressure and number of gas molecules relate?
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What causes gas to have pressure?

The number and vibration of the molecules that make up the gas cause the pressure.


What happens to the pressure of gas when it is heated and why?

The molecules of a gas move faster when heated so the pressure increases.


How does the average kinetic energy of a gas relate to its temperture?

The kinetic energy of a gas is the speed of motion of the gas molecules. The higher the speed of the molecules, the higher the kinetic energy and the higher the temperature.


What is the pressure of gas caused by?

Gas pressure is caused by gas molecules zipping around and bumping into things. These molecules have kinetic energy defined a 1/2 the mass times the velocity squared. Increasing temperature increases the speed that the molecules zip around - so the pressure increases (hot soda can for example has more pressure than a cold one).


Explain how a gas exerts pressure on the sides of its container?

Gas molecules are loosely bound to one another. When they are excited by light rays or other molecules, they collide with each other and on the sides of the container. The equation for an ideal gas that has reached a stable condition is PV = NRT, where P is the pressure of the gas, V is the volume of the gas, N is the number of molecules, R is the gas constant, and T is the absolute temperature. Therefore, the answer to your question is P = NRT/V. This is the pressure that is caused by the gas molecules impinging on the sides of the container. There are chemical tables that give the pressure per square inch for various gases at various temperatures, so you don't have to solve this equation for each situation.

Related questions

What causes the pressure inside oxygen tanks to change as they are filled?

The number of gas molecules changes.the number of gas molecules changes


Why is there no gas pressure inside a vacuum?

Gas pressure is caused by the molecules of gas striking the walls of a container, or in the case of Earth's atmosphere, the molecules of air hitting the earth. In a vacuum, there are no gas molecules. No molecules, no pressure.


What three things affect airpressure?

Heat, number of molecules, atmospheric pressure and volume Volume * Pressure = molecules * molar gas constant * Heat


What cause the pressure by gas molecules on their container?

What causes the pressure exerted by gas molecules on their container? idk


What is the name of law given to number of molecule is inversely proportional to pressure?

There is no such law. The Ideal Gas Law states that pressure is proportional to the number of molecules Pressure x Volume = number x Ideal gas constant x Temperature


A gas is most likely to change to the liquid phase when the pressure on the gas?

A gas is most likely to change to the liquid phase when the pressure on the gas is increased. This is because the same number of molecules will have less space to occupy.


Why in the terms of gas motion in the air does the pressure rise?

Pressure increases if gas molecules slam into a surface either faster (higher temperature), hit harder (more mass), or more often (larger number of molecules). Pressure decreases if the gas molecules are generally moving parallel to the measuring surface, which is where the venturi effect and lift on wings can come from.


What causes gas to have pressure?

The number and vibration of the molecules that make up the gas cause the pressure.


What are the 2 factors that affect gas preassure?

There are four factors that affect gas pressure. The ideal gas law enumerates them: Pressure = number of gas molecules * constant describing the particular gas's behavior * temperature of the gas / volume in which the gas is confined


Why does the gas pressure change when gas pressure released from a small container into a large container?

Perhaps the simplest answer is to refer to the ideal gas law PV=nRT where P is pressure V is volume n is the number of moles of gas - which is proportional to the mass of the gas R is the "Rankine" or Ideal Gas constant T is temperature If you increase the volume, the pressure has to drop unless you change the amount of gas or change the temperature. In broader terms, the pressure will drop because the pressure is related to the number of molecules banging on a surface per unit area. If you spread them out by moving the gas from a smaller container to a larger container, there will still be the same number of molecules of gas BUT they will be banging on a bigger area, hence 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.


What does the constant collision of gas molecules against the inside walls of a container produce A Temperature Bdensity C Pressure Ddiffusion?

The constant collision of gas molecules against the inside walls of a container produces pressure which is directly proportional to the number of collisions.