For each of the following processes, deduce whether q, w, DU, DH and DSsystem is positive, zero, or negative. (plz answer it correctly)
1.Melting of benzene at its normal melting point.
2.Reversible adiabatic expansion of a perfect gas.
3.Reversible isothermal expansion of an ideal gas.
4.Adiabatic expansion of a perfect gas into vacuum (Joule experiment).
5.Joule â Thompson adiabatic throttling of a perfect gas.
6.Reversible heating of a perfect gas at constant P
7.Reversible cooling of an ideal gas at constant V.