(a) isothermal expansion a calculation of ah we know that h e + pv ah a(e + pv) ah ae + a(pv) ah ae = anrt or pv nrt since for an isothermal process, at 0 ae =

For isothermal process T=0 and you know internal energy is a function of temperature so change in internal energy is also 0 ie delta E =0...so q=-W

because here w = pv = nRT right?? for isothermal process delta T = 0 ( change in temperature) . but in this equation only T is given (not delta T) so i will not zero