Pressure problem

  • #1

Homework Statement



Clouds of interstellar hydrogen gas have densities of up to 1.0 X 10^10 atoms/m^3 and temperatures of up to 1.0 X 10^4 K. What is the pressure in such a cloud?



Homework Equations



Ideal-Gas Law: pV=nRT



The Attempt at a Solution



I don't know how to find the volume or number of moles for the equation.

Please help.
 

Answers and Replies

  • #2
gneill
Mentor
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2,867

Homework Statement



Clouds of interstellar hydrogen gas have densities of up to 1.0 X 10^10 atoms/m^3 and temperatures of up to 1.0 X 10^4 K. What is the pressure in such a cloud?



Homework Equations



Ideal-Gas Law: pV=nRT



The Attempt at a Solution



I don't know how to find the volume or number of moles for the equation.

Please help.

Within the cloud is there anything to distinguish one sample volume from another?
 
  • #3
Within the cloud is there anything to distinguish one sample volume from another?

I don't really know.
 
  • #4
gneill
Mentor
20,925
2,867
I don't really know.

Is there anything in the question that would suggest that anything but a representative sample is to be considered?
 
  • #5
Is there anything in the question that would suggest that anything but a representative sample is to be considered?

No there is not anything within the question other than what is stated above.
 
  • #6
gneill
Mentor
20,925
2,867
No there is not anything within the question other than what is stated above.

So any sample of the cloud will do, right? What would be a convenient size of sample?
 

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