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## Which of the following has the least amount of kinetic energy?

Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.

## In which of these samples do the molecules most likely have the most kinetic energy?

d) Water vapor at has the most kinetic energy because it has the highest temperature and also, molecules in gaseous state are capable of fast motion.

iron

Nitrogen

## Do heavier molecules have higher kinetic energy?

1. All gases at the same temperature have the same kinetic energy. 2. Heavier gases must move more slowly in order to have the same kinetic energy as lighter gases.

## Do heavier molecules move faster?

Since all gases have the same average kinetic energy at the same temperature, lighter molecules move faster and heavier molecules move slower on average.

## How fast do molecules move in a gas?

As a side note, gas molecules tend to move very fast. At 0 °C the average H2 molecule is moving at about 2000 m/s, which is more than a mile per second and the average O2 molecule is moving at approximately 500 m/s.

## Do heavier molecules diffuse slower?

The closer the distribution of the material gets to equilibrium, the slower the rate of diffusion becomes. Mass of the molecules diffusing: Heavier molecules move more slowly; therefore, they diffuse more slowly. The reverse is true for lighter molecules.

## Why do larger molecules diffuse slower?

If they can move faster, then they can also diffuse faster. Conversely, when the kinetic energy associated with the molecules decreases so does their movement. As a result, the rate of diffusion will be slower. Mass of Particle: Heavier particles will move more slowly and so will have a slower rate of diffusion.

## Why do larger molecules move slower?

With an increase in temperature, the particles gain kinetic energy and move faster. The actual average speed of the particles depends on their mass as well as the temperature – heavier particles move more slowly than lighter ones at the same temperature.

## Why did the dye molecules move in agar gel?

The agar gel is a Jello-like substance, composed of ~98% water. Because of its high water content, the dye molecules will move freely through the gel.

## Which diffused dye is faster?

Potassium Permanganate is approximately half the molecular weight of Methylene Blue and diffuses more rapidly than Methylene Blue, resulting a slightly larger radius for the Potassium Permanganate dye spot than for Methylene Blue.

## Why did the dye molecules move?

Random movements of the dye and water molecules cause them to bump into each other and mix. Thus, the dye molecules move from an area of higher concentration to an area of lower concentration. Eventually, they are evenly spread throughout the solution.

## Which molecules diffuse at the fastest rate?

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).

## What is the highest rate of diffusion?

Diffusion is inversely proportional to molecular weight. Therefore, NH3 has the highest diffusion rate.

## Which gas diffuses faster hydrogen or oxygen?

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

## Which of the two diffuses faster a liquid or a gas Why?

Answer: Gas molecules diffuse faster than liquid molecules because they have more kinetic energy and are smaller than liquid molecules. When heat is added to a gas or liquid, the amount of kinetic energy in the molecules increases and speeds up their rate of diffusion.

## Why can liquids flow?

Liquids flow because the intermolecular forces between molecules are weak enough to allow the molecules to move around relative to one another. In liquids, the intermolecular forces can shift between molecules and allow them to move past one another and flow.

## Which of the two diffuses slower bromine?

Which of the two diffuses slower: bromine vapour into air or copper sulphate into water? Solution: Copper sulphate diffuses slower as compared to bromine vapour in air because the rate of diffusion is faster in gases than in liquids.

Carbon atoms

## Which will diffuse faster ammonia or carbon dioxide?

Density for Ammonia(gas) at STP is 0.73 kg/m3 and for Carbon dioxide is 1.98 kg/m3. Thus,as CO will diffuse faster due to higher density as compared to NH.

2021-06-17