# Shakuhachi.net

Best place for relax your brain

# What is the rate of oxygen?

## What is the rate of oxygen?

The normal flow rate of oxygen is usually six to 10 litres per minute and provides a concentration of oxygen between 40-60%. This is why they are often referred to as MC (medium concentration) masks, as 40%-60% is considered to be a medium concentration of oxygen.

## What are the main points of particle theory?

The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion. The degree to which the particles move is determined by the amount of energy they have and their relationship to other particles.

What is the ratio of diffusion rate of oxygen to hydrogen?

1 : 4

What does kinetic theory explain?

kinetic theory. A fundamental theory of matter that explains physical properties in terms of the motion of atoms and molecules. In kinetic theory, properties such as pressure and temperature are viewed as statistical properties of the overall behavior of large numbers of particles.

### What are the five postulates of kinetic theory?

9.13: Kinetic Theory of Gases- Postulates of the Kinetic Theory

• The molecules in a gas are small and very far apart.
• Gas molecules are in constant random motion.
• Molecules can collide with each other and with the walls of the container.
• When collisions occur, the molecules lose no kinetic energy; that is, the collisions are said to be perfectly elastic.

### What is the kinetic energy of oxygen?

Kinetic energy of oxygen molecule at 0^∘C is 5.64 × 10^-21J .

What is Graham’s law of diffusion?

Graham Law. The rate of effusion of a gaseous substance is inversely proportional to the square root of its molar mass. Graham’s law is an empirical relationship that states that the ratio of the rates of diffusion or effusion of two gases is the square root of the inverse ratio of their molar masses.

What are the particulate theory of matter?

All matter is composed of tiny indivisible particles too small to see. These particles do not share the properties of the material they make up. There is nothing in the space between the particles that make up matter. The particles which make up matter are in constant motion in all physical states.

#### Does number of moles affect kinetic energy?

The average kinetic energy of gas particles is dependent on the temperature of the gas. Increasing the number of moles of gas means there are more molecules of gas available to collide with the walls of the container at any given time.

#### What are the main postulates of kinetic theory of matter?

The main postulates of the kinetic theory of matter are:

• Matter is composed of very small particles called atoms and molecules.
• The constituent particles of a kind of matter are identical in all respects.
• These particles have space or gaps between them which is known as interparticular or intermolecular space.

What is the kinetic theory of an ideal gas?

Kinetic Theory of Ideal Gases. Kinetic Theory of Ideal Gases. THEORY. An ideal gas is a gas where the atoms do not exert forces on each other but they do collide with the walls of the container (in elastic collisions).

What are the main components of kinetic energy?

There are three main components to kinetic theory:

• No energy is gained or lost when molecules collide.
• The molecules in a gas take up a negligible (able to be ignored) amount of space in relation to the container they occupy.
• The molecules are in constant, linear motion.

## What is the rate of diffusion of oxygen?

From Graham’s law, we can use the molar mass of each gas: rate of effusion of hydrogenrate of effusion of oxygen=√32g mol−1 √2g mol−1 =√16√1=41 rate of effusion of hydrogen rate of effusion of oxygen = 32 g mol − 1 2 g mol − 1 = 16 1 = 4 1 Hydrogen effuses four times as rapidly as oxygen.

What is kinetic gas equation?

Derivation Of Kinetic Gas Equation Due to the influence of temperature, the gas molecules move in random directions with a velocity ‘v. ‘ The pressure of the gas molecules is the force exerted by the gas molecule per unit area of the wall of the container and is given by the equation. P=\frac{F}{A}

Which is faster oxygen or hydrogen?

The average velocity of hydrogen molecules is 4 times greater than that of oxygen molecules.

Nitrogen

### Which gas diffuses the fastest?

At any given temperature, small, light molecules (such as H2, hydrogen gas) diffuse faster than larger, more massive molecules (such as N2, nitrogen gas) because they are traveling faster, on the average (see heat; kinetic-molecular theory of gases).

Which molecules are moving faster?

Heavier particles move more slowly, on average, which makes perfect sense. Consider a plot of the behavior of the noble (monoatomic) gases, all at the same temperature. On average helium atoms move much faster than xenon atoms, which are over 30 times heavier. As a side note, gas molecules tend to move very fast.

What is the relationship between pressure and kinetic energy?

Any increase in the frequency of collisions with the walls must lead to an increase in the pressure of the gas. Thus, the pressure of a gas becomes larger as the volume of the gas becomes smaller. The average kinetic energy of the particles in a gas is proportional to the temperature of the gas.

#### What is kinetic energy and its formula?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

#### What are the 3 parts of kinetic theory?

The simplest kinetic model is based on the assumptions that: (1) the gas is composed of a large number of identical molecules moving in random directions, separated by distances that are large compared with their size; (2) the molecules undergo perfectly elastic collisions (no energy loss) with each other and with the …

What are the 6 main points of the particle theory?

Terms in this set (6)

• All matter is made of particles.
• Particles have space between them.
• Particles are always moving.
• Particles move faster and get farther apart when heated.
• Particles are attracted to each other.
• All Particles of the same substance are identical.

What are the 4 points of particle theory?

All substances are made of particles. The particles are attracted to each other (some strongly, others weakly). The particles move around (have kinetic energy). As temperature increases, the particles move more (their kinetic energy increases).

## How does diffusion depend on pressure?

Diffusion is the spontaneous movement of molecules from one region to another due to temperature, pressure, concentration, or other force gradients. After 20 bar, the diffusivity decreases with increasing pressure; however, the correlation between diffusivity and pressure has not been readily established.

## What is particle theory of matter Grade 7?

The particle theory of matter is: A scientific model of the structure of matter; according to the particle theory, all matter is made up of extremely tiny particles, and each pure substance has its own kind of particle, different from the particles from any other pure substance.

What is the particle theory of matter Grade 9?

The Particle Theory of Matter This theory has five points: 1. all matter is made of extremely tiny particles (much, much smaller than cells!) 2. each pure substance is made of just one kind of particle.

How many times is the rate of diffusion of hydrogen faster than that of oxygen?

So, rate of diffusion of hydrogen gas is four times faster than oxygen gas.

### What are the 5 main ideas of the particle theory?

• All matter is made up of very small particles.
• There is space between particles.
• All particles in a pure substance are the same.
• The particles in matter are always in motion.
• Particles are attracted to each other.

### What are the theories of matter?

The Molecular or Kinetic Theory states that matter consists of small molecules in motion. The Atomic Theory states that matter consists of smaller particles called atoms. Subatomic theories state that atoms are made of protons, neutrons and electrons, and they are made up of even smaller particles.