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The distance between particles in a gas can be calculated using a common approximation in chemistry, that the volume of an ideal gas at STP is 22.4 Litres/mol. For simplicity, we assume that the gas is Helium.
As there are 6x1023 helium atoms in a mole of helium gas, the volume occupied by a helium atom is 22.4/6x1023 = 3.7x10-23 litres. A litre is 10x10x10cm, so a helium atom occupies a cube of volume 3.7x10-20 cm3, or a cube of side 3.3x10-7cm. If we assume that the helium atom sits, on average, at the centre of the cube, then the distance to the helium atom at the centre of an adjacent cube is 2x(cube edge length/2) = 3.3x10-7cm, or 3.3 nanometres.
This distance will vary hugely by orders of magnitude, depending upon the conditions. For hotter gases, the distance will increase, as the volume increases. For gases under pressure, the distance will be less.
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∙ 14y ago
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∙ 9y agoThe velocity of each molecule is random - in direction and magnitude. The molecules travel in straight lines, unless they are involved in a collision with another molecule. The average speed of the molecules is determined by the temperature of the gas.
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∙ 9y agoParticles in a gas can move freely and are much farther apart than in liquids and solids. This allows gases to flow and be compressed very easily.
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∙ 13y agoVoids. The distances between particles in a gas are called voids.
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∙ 11y agoi think its because a gas moves really fast and its able to move really FAST then you think!!
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∙ 10y agoThis mainly depends on pressure (or amount of gas in a container) and temperature, not on the kind of gas.
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If collisions between gas particles and between particles and container walls were not elastic collisions what would happen to a gas?
This is not an ideal gas and gas laws are are only approximately applicable.
What model best describes the particles of a solid and their motion?
I would describe it as this: All of the particles are tightly packed together with almost no spaces between them. Their motion is very limited, unlike that of a gas where the particles are spaced further apart and they are free to move around more.
Gas pressure is caused by collisions between?
particles. are you dumb?
Ability to force a gas into smaller space is called what?
It is called compressibility. The compressibility of gases can be explained by the kinetic particle theory: due to the large amount of space between the gas particles and the weak attraction forces between them, gases can easily be compressed (the particles are brought closer to each other, thus reducing the volume of the gas).
What is the difference between particles in a solid and particles in a gas?
The particles of a solid are attracted strongly to other particles around them locking them into a fixed position in which they may only vibrate but not move freely from one position to another. The particles of a gas are the opposite. Not strongly attracted, but move randomly about bouncing off of other gas particles. This allows the gas particles to move to any position, not just remain surrounded by the same few particles.
What does gases low densities show about the distance between gas particles?
A low-density gas would have molecules that are farther apart and fewer in numbers per unit volume.
As a substance changes from a liquid to a gas the space between its particles?
......... distances become 100 to 1000 times bigger
Which describes the path of a gas particle between collisions with other particles?
Straight line
What forces Between the particles in a gas are weak?
the bonds between particles in a liquid are very weak
When does a liquid gradually change into a gas?
when the distance between the atoms or molecules increases the force of attraction becomes less and the atoms or particles fall apart and generate distances betwen them . gas is the same form of the element just as liquid the only difference is the distance between particles is large and the force of attraction is very less.
If collisions between gas particles and between particles and container walls were not elastic collisions what would happen to a gas?
This is not an ideal gas and gas laws are are only approximately applicable.
What between the particles of a gas and the walls of the container cause pressure In a close container of gas?
Contact between the particles of a gas and walls of the container cause pressure in a closed container of gas.
What determines kinetic energy of gases?
Gas particles are so small in relation to the distances between them that their individual volumes can be assumed to be insignificant. The large relative distances between the gas particles means that there is considerable empty space between the particles. This assumption that gas particles are far apart explains the important property of gas compressibility: A gas is easily compressed because of the space between the particles. Therefore, the energy of a collision is absorbed when the gas particles are forced closer together. The second property of gas particles assumed by the kinetic theory is that no attractive or repulsive forces exist between the particles. As a result, gases are free to move inside their containers. In fact, a gas expands until it takes the shape and volume of its container. The third assumption is that gas particles move rapidly in constant random motion. The particles travel in straight paths and move independently of each other. Only when a particle collides with another particle or object does it deviate from its straight line path. Kinetic theory assumes further that these collisions between gas particles are perfectly elastic, which means that during a collision the total amount of kinetic energy remains constant and that the kinetic energy is transferred without loss from one particle to another. You should also recall that the average kinetic energy of a collection of gas particles in directly proportional to the Kelvin temperature of the gas.
What what do the particles of gas have between them?
empty space
Why does gas have more volume than water?
Because the intermolecular space between the gas particles are far more as compared to that in liquid, and that is because of less forces of attraction between particles in the gas, which can be attributed to more energy present in gas particles.
What model best describes the particles of a solid and their motion?
I would describe it as this: All of the particles are tightly packed together with almost no spaces between them. Their motion is very limited, unlike that of a gas where the particles are spaced further apart and they are free to move around more.
Is a particle of liquid Mercury the same size as the space between particles of Mercury in gas form?
No. The spaces between the particles in a gas are much bigger than the particles themselves. The size of a particle does not vary between the states of a substance.
