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Are the molecules in a gas in constant motion?
Yes, the molecules of a gas are constantly in a random motion if the gas temperature is more than 0 degree kelvin. This random motion determines the average kinetic energy of the molecules which is equal to the temperature of the gas. I hope this answers your question.
What is the most appropriate to express number of molecules per volume?
Avogadro's number is the number of molecules in a mole of a substance. This is expressed as 6.022 141 29 E23 /mol. This is defined as the number of atoms in 12 grams of carbon12. A mole of any gas has this number of molecules. Any fraction of that mole must be divided into the number.
Four states of matter?
the four states of matter are a solid, liquid ,gas, and plasma the molecules in a solid are tightly packed together in a liquid they take the shape of its container a gas the molecules move freely and in plasma the molecules attract each other positive and negative
Gas particles travel at speeds of up to 500 meters per second then why does it take so long for gas molecules to travel the length of a room?
Because gas molecules continually collide with others. The result is a random path (known mathematically as a drunkard's walk) which results in a very long time to cover a significant distance.
When can volume fraction be equal to mole fraction?
The volume fraction of a substance is equal to the mole fraction for ideal gas mixture
What is related to the motion of atoms or molecules in a substance?
The motion of atoms or molecules in a substance is related to its temperature, with higher temperatures leading to increased motion. This motion affects the state of matter (solid, liquid, gas) that the substance is in, as well as its properties such as density and viscosity. In gases, the motion of atoms or molecules creates pressure.
In which phases will the molecules of a substance fill whatever size container they are placed in?
In the gas phase, molecules will evenly fill the size of the container they are placed in. This is because gas molecules have high kinetic energy and are in constant motion, spreading out to fill the available space.
Molecule of a substance are in a motion?
Molecules of a substance are in constant motion. Whether you have a solid, liquid, or gas, the particles are moving (but the speed and amount they move differs). Particles of a solid move the least (they basically vibrate), particles of a liquid can flow around one another, and particles of a gas have a lot of space between them because they move in random, constant motions.
Why the motion of gas molecules is also called thermal motion?
The motion of gas molecules is called thermal motion because it is directly related to the temperature of the gas. As the temperature increases, the gas molecules move faster and collide more frequently, leading to an increase in thermal energy and the overall temperature of the gas.
Is hydrogen gas a pure substance?
Yes, hydrogen gas is a pure substance because it consists of only hydrogen atoms. It is a homogeneous mixture of identical molecules, making it a pure substance.
How molecular motion changes as a substance changes from one state to another?
As a substance changes from a solid to a liquid, the molecular motion increases as the intermolecular bonds break and the molecules can move past each other more freely. When a substance transitions from a liquid to a gas, the molecular motion increases further as the molecules have enough energy to overcome intermolecular forces entirely and move independently.
What do you know about gases molecules?
Molecules of a gas are in permanent motion.
Is a hydrogen gas an example of a mixture?
Hydrogen gas is not an example of a mixture as it consists of only hydrogen molecules. It is a pure substance.
Are the molecules in a gas in constant motion?
Yes, the molecules of a gas are constantly in a random motion if the gas temperature is more than 0 degree kelvin. This random motion determines the average kinetic energy of the molecules which is equal to the temperature of the gas. I hope this answers your question.
What is the ability of the gas to completely spread out and mix with other substance?
This is entropy, the tendency for an ordered system to move to a state of lower energy (every thing evenly spread out). Brownian motion (haphazard random motion of molecules) accounts for the motion.
Does gas molecules are constantly in motion?
Yes they do!
When are molecules of a substance in motion?
Molecules of a substance are in motion at all times, even in the solid state where they vibrate in fixed positions. In liquids, molecules move freely and slide past one another, while in gases they move randomly and collide with each other and their container walls.
