# Find the average velocity of the molecules of neon before an

• MaiteB
In summary, the conversation discusses finding the average velocity of molecules in a container of neon gas at two different temperatures, 273 K and 373 K, with constant volume. The formula U=3/2vRT is mentioned but the lack of ΔU is noted. It is suggested to use ΔU = ΔQ + ΔW and since no work was done, ΔW = 0. The relative speed and temperature of the molecules are discussed, with a hint to consider the form of energy they possess.
MaiteB

## Homework Statement

A container has neon gas in the temperature 273 K. We heat the container to the temperature 373 k, keeping the volume constant. Find the average velocity of the molecules of neon before and after the heat.

U=3/2vRT

## The Attempt at a Solution

I thought to us the formula U=3/2vRT but I don't have delta U.

ΔU = ΔQ + ΔW, since no work was done by/to the system then ΔW = 0, and you're left with ΔU = ΔQ !
Hope this help :) !

Noctisdark said:
ΔU = ΔQ + ΔW, since no work was done by/to the system then ΔW = 0, and you're left with ΔU = ΔQ !
Hope this help :) !
How can I find the ΔQ?

Energy (U) is proportional to temperature (T). How do you relative speed (v) and temperature (T)? Hint: What form of energy do the molecules possess?

## 1. What is the average velocity of neon molecules before an experiment?

The average velocity of neon molecules before an experiment can vary depending on several factors such as temperature, pressure, and composition. However, on average, the velocity of neon molecules ranges from 400 to 600 meters per second.

## 2. How is the average velocity of neon molecules calculated?

The average velocity of neon molecules can be calculated by dividing the total distance traveled by the molecules by the total time taken. This can be expressed mathematically as average velocity = total distance/total time. Alternatively, it can also be calculated by taking the square root of the ratio of the average kinetic energy of the molecules to their mass.

## 3. Does the average velocity of neon molecules change over time?

Yes, the average velocity of neon molecules can change over time due to various factors such as changes in temperature, pressure, and external forces acting on the molecules. However, in a stable environment, the average velocity of neon molecules will remain relatively constant.

## 4. How does the average velocity of neon molecules affect their behavior?

The average velocity of neon molecules has a direct impact on their behavior. Higher velocities can result in more collisions between molecules, leading to increased pressure and temperature. It can also affect the diffusion rate of neon molecules and their ability to escape from a confined space.

## 5. Can the average velocity of neon molecules be manipulated?

Yes, the average velocity of neon molecules can be manipulated by changing the temperature, pressure, or external forces acting on the molecules. For example, increasing the temperature will result in an increase in the average velocity of the molecules, while decreasing the pressure will decrease their average velocity.

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