Calculating Nitrogen Specific Volume for Scientists

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Discussion Overview

The discussion revolves around calculating the specific volume of nitrogen gas at various temperatures and pressures, specifically focusing on the application of the ideal gas law.

Discussion Character

  • Technical explanation

Main Points Raised

  • One participant requests assistance in calculating the specific volume of nitrogen at specific temperature and pressure conditions.
  • Another participant suggests using the ideal gas law (PV=nRT) and converting mass to moles to find the specific volume.
  • A follow-up question seeks clarification on whether knowing pressure and temperature allows for the calculation of specific volume using the gas constant and the number of moles of nitrogen.
  • It is confirmed that expressing the number of moles in terms of 1 kg of nitrogen is necessary for the calculation.

Areas of Agreement / Disagreement

Participants appear to agree on the method of using the ideal gas law for the calculation, but there is no consensus on the specific values or additional details needed for the calculation.

Contextual Notes

Assumptions regarding the ideal gas behavior of nitrogen under the specified conditions are not explicitly stated, and the discussion does not resolve any potential limitations of the ideal gas law in this context.

mikebb
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I need some help in calculating the specific volume ( in cubic metres per kg) of Nitrogen at various temperature + pressures. Eg, at 100.73K and 817kPa. Can anyone please point me in the right direction ?
 
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Have you tried PV=nRT? Just convert 1 kg to number of moles.

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You mean if I already have P and T, then all I need are R and n to calculate v ? R is constant, so I just need n. Do you mean I need to express n as the number of moles in 1kg of nitrogen ?
 
Yes, that's the way to do it.

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that's great , thanks
 

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