A certain gas obeys P(Vm−b)=RT . The value of (∂Z∂P)T is xbRT. The value of x is ______.
P(Vm−b)=RTPVm–Pb=RTPVmRT=1+PbRTZ=1+PbRT∂Z∂P=0+bRT∵ bRT=xbRT∴ x=1