Using P-v-T data, estimate ( hig ), ( stg ), ( ufg ) of water at ( T = 40⁰ textC ). Where ( T = 40⁰ textC ). Calculate the difference (%) between: 
a) Entropy and enthalpy 
b) Specific enthalpy and specific entropy 
c) Specific internal energy and specific entropy 
d) Enthalpy and specific internal energy