 #1
ArcHorizon
 3
 1
 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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