# Question on gases physics/chemistry

• GreenPrint
In summary, the conversation involved a question about a chemistry problem and the use of the equation K = 3nRT. The person asking the question was unsure about the role of mass in the equation and whether decreasing mass would decrease kinetic energy. The answer provided was that K does not depend on mass, but that decreasing mass can indirectly affect kinetic energy through the proportional relationship between moles and mass.
GreenPrint
When I took AP Physics we did similar problems... almost identical lol

## Homework Statement

http://img252.imageshack.us/img252/6931/chemistry.jpg

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SEE BELOW

## The Attempt at a Solution

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http://img440.imageshack.us/img440/7434/chemistryanswer.jpg

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Last edited by a moderator:
please anybody?

? ANyone know?

mathematically I don't see how i am wrong

You have K = 3nRT. There's no mass in this equation. K does not depend on mass.

yes but moles is directly proportional to mass so decreasing mass will decrease mass which will decrease kinetic energy right?

## 1. What are the different states of matter?

The three states of matter are solid, liquid, and gas. Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither a definite shape nor volume.

## 2. How do gases behave under different temperatures and pressures?

Gases follow the ideal gas law, which states that the pressure, volume, and temperature of a gas are all directly proportional to each other. This means that as temperature and/or pressure increase, volume increases, and vice versa.

## 3. What is the difference between a gas and a vapor?

A gas is a substance that exists in the gas state at room temperature and atmospheric pressure, while a vapor is a substance that exists in the gas state at a temperature and pressure below its critical temperature and pressure. Gases can become vapors if their temperature and/or pressure are lowered enough.

## 4. How is the behavior of gases described using the kinetic molecular theory?

The kinetic molecular theory states that gases are made up of tiny particles in constant motion, and that the pressure of a gas is caused by the collisions of these particles with the walls of their container. It also explains the relationship between temperature and the average kinetic energy of gas particles.

## 5. How does the behavior of gases differ from that of solids and liquids?

Gases have much more space between particles compared to solids and liquids, which allows them to be easily compressed and to expand to fill their container. Gas particles also have much higher kinetic energy and move at a faster speed than particles in solids and liquids.

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