Use the steam tables to answer the following: (a) find: (i) the specific internal energy of steam at 5.0 mpa and 350°c. (ii) the specific density of steam at 2.75 mpa and 450°c. (iii) the molar enthalpy of steam at 91.8 bar and 567°c. (iv) the vapor pressure of (saturated) steam at 283°c. (v) the molar enthalpy of vaporization at 230°c in units of bar. (vi) the specific internal energy of liquid water at 20 mpa and 130°c. (vii) the specific internal energy of liquid water at 14.5 atm and 85°c. (viii) the change in molar density on sublimation for water at 286 k. (b) use origin to plot the relationship between t and p values for which the specific enthalpy of steam has the value ĥ(t, p) = 3650 kj/kg.