I get something slightly different here.barryj said:
In this case, the first equality comes from the second. The equation of state for the ideal gas is PV=nRT, and since nR is constant, so will the ratio PV/T.barryj said:
The procedure is correct, but I just realized that your values for U are wrong. The gas constant you used is okay when dealing with pressure in atm and value in l, but for calculating U you need to use R = 8.314 J K-1 mol-1.barryj said:
If you use R=0.0821 L atm K-1mol-1 you get the internal energy in L atm units, not in joules.barryj said:
To me, 48.6 and 48.7 are not the same. This is what I wanted to point out.barryj said:
R = 8.315 J K-1 mol-1 = 0.08205 atm l K-1 mol-1barryj said:
Yes, these are the correct energies.barryj said:
That's not correct. If you used units throughout, you would see clearly why.barryj said:
It depends what precision you need. 1 atm = 101325 Pa, so only approximately 105.barryj said:
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