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- Homework Statement
- I got this question from one of the tutors, and they told me that this was a basic question. To me, it seemed to be a hard question, since it was my first time taking lessons for Physics Class.

So, this is the question.

[An ideal monatomic gas is kept in a container of volume 2.1 × 10–4 m3, temperature 310 K and pressure 5.3 × 105 Pa.]

[The volume of the gas is increased to 6.8 × 10–4 m3 at a constant temperature.]

a.i) State what is meant by an ideal gas.

a.ii) Calculate the number of atoms in the gas.

a.iii) Calculate, in J, the internal energy of the gas.

- Relevant Equations
- Not Sure This will help but

pV = nRT

Pressure in Pa

Volume in m^3

Temperature in kelvin

n is number of moles

R is gas constant

2.1 * 10^-4m/3 Temperature 310K

Pressure: 5.3 * 105 Pa

So the Ideal gas formula is PV = nRT

2.1*10^-4m^3 Times 5.3*105Pa = n * Gas Constant * Temperature

2.1*10^-4m^3 (*) 5.3*105Pa = # of moles *

I'm not sure what I was doing, but the whole equation stuff got hard and I stopped.

I left this question for 3 days, so I thought that I might ask for help.

Pressure: 5.3 * 105 Pa

So the Ideal gas formula is PV = nRT

2.1*10^-4m^3 Times 5.3*105Pa = n * Gas Constant * Temperature

2.1*10^-4m^3 (*) 5.3*105Pa = # of moles *

I'm not sure what I was doing, but the whole equation stuff got hard and I stopped.

I left this question for 3 days, so I thought that I might ask for help.

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