(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An ideal gas at 25degree celcius and 100kPa is allowed to expand reversibly and isothermally to 5kPa. Calculate..

1) w per mol (J/mol)

2) q per mol (J/mol)

3) change in molar internal energy U (J/mol)

4) change in molar enthalpy H (J/mol)

2. Relevant equations

ΔU = q + w

= q - pextΔV

ΔH = ΔU +p ΔV

= ΔU + ΔngasRT

PV=nRT

Um(T)=3/2RT

3. The attempt at a solution

I absolutely have no idea how to do this question. Any direction would be greatly appreciated.

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# Calculating q,w,H and U

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