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.

Lem 2 the data below are for the system ethyl propyl ether (1)-chloroform (2) at 0.5 bar. use the data to answer the following questions (all questions refer to p d 0: 5 bar). a) what are the boiling points of the pure components at 0.5 bar? b) a mixture with the overall composition z1 d 0: 1 is brought to 47.6ä±c, 0.5 bar. what is the phase? c) 100 mole of a mixture with z1 d 0: 1 (state a) is mixed with 22 mole of pure ethyl propyl ether vapor (state b). the mixing takes place at 47.6 ä±c, 0.5. bar. what is the phase of the resulting mixture (state c)? if the state is a v/l mixture report the number of moles and mole fractions in each phase. d) plot the txy graph and show states a, b and c. the graph must be done by computer and should be properly annotated. ethyl propyl ether (1) - chloroform (2) at 0.5 bar t ( ä±c) x1 y1 t ( ä±c) x1 y1 42.9 0.000 0.000 49.0 0.470 0.455 43.0 0.020 0.010 49.1 0.520 0.520 43.9 0.065 0.029 48.9 0.567 0.592 45.4 0.156 0.089 48.3 0.652 0.720 46.4 0.215 0.142 47.6 0.745 0.815 47.6 0.296 0.223 46.7 0.822 0.872 48.3 0.362 0.302 45.7 0.907 0.937 48.7 0.410 0.375 44.6 1.000

Stage in which a star’s outer layers have started to cool and grow outward?

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n