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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.
What else can I help you with?
What happens to the distance between particles of a substance as it changes from a liquid to a gas?
The distance between particles increases as a substance changes from a liquid to a gas. In the gas phase, particles are spread far apart and move freely, leading to higher distances between them compared to the closer arrangement in the liquid phase.
Are gas particles further apart than liquid particles according to the kinetic theory of matter?
Yes, according to the kinetic theory of matter, gas particles are further apart from each other compared to liquid particles. Gas particles have more kinetic energy and move freely, resulting in greater distances between them, while liquid particles are closer together and have less movement.
What correctly describes an assumption made by kinetic molecular theory?
Kinetic molecular theory assumes that gases consist of particles (atoms or molecules) in constant random motion. It also assumes that gas particles are small compared to the distance between them. Additionally, the theory assumes that gas particles are in continuous, rapid, and random motion.
When is H2 an ideal gas?
Hydrogen gas (H2) behaves most closely to an ideal gas at high temperatures and low pressures. In these conditions, the distances between gas particles are large enough to minimize intermolecular forces, resulting in behavior that closely follows the ideal gas law.
What is between tha gas particles?
In a gas, the space between gas particles is largely empty. The particles are far apart compared to their size, with a lot of space between them. This allows gas particles to move freely and independently of one another.
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.
Which describes the path of a gas particle between collisions with other particles?
Straight line
In which state of matter are the particles of matter farthest apart?
In the gas state, the particles of matter are farthest apart compared to the solid and liquid states. Gas particles are free to move and have higher kinetic energy, resulting in greater distances between them.
What happens to the distance between particles of a substance as it changes from a liquid to a gas?
The distance between particles increases as a substance changes from a liquid to a gas. In the gas phase, particles are spread far apart and move freely, leading to higher distances between them compared to the closer arrangement in the liquid phase.
As a substance changes from a liquid to a gas the space between its particles?
......... distances become 100 to 1000 times bigger
What forces Between the particles in a gas are weak?
the bonds between particles in a liquid are very weak
Do gas particles ever touch each other?
Gas particles do not touch each other in the way that solid particles do. The particles in a gas are in constant motion and are separated by large distances relative to their size. However, they can collide with each other and with the walls of their container.
In which substances do sound not travel the quickest?
Sound does not travel as quickly in gases compared to solids and liquids due to the larger distances between particles in gases. This results in a slower transfer of vibrations between gas particles, leading to a slower speed of sound.
Are gas particles further apart than liquid particles according to the kinetic theory of matter?
Yes, according to the kinetic theory of matter, gas particles are further apart from each other compared to liquid particles. Gas particles have more kinetic energy and move freely, resulting in greater distances between them, while liquid particles are closer together and have less movement.
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.
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 are the physical properties of a gas and its relationship to particle energy?
A gas has no definite shape or volume, as its particles are free to move and spread out. The energy of gas particles is directly related to their motion – higher kinetic energy results in faster movement and greater distances between particles. As gas particles gain more energy (e.g., through increased temperature), they move faster and collide with each other and container walls more frequently, leading to increased pressure.
