I need help with these problems:

1. Water at 20 psia and 50F enters a mixing chamber at the rate of 300 lbm/min. It is uniformly mixed in the chamber with steam entering at 20 psia and 240 F. The mixture leaves the chamber at 20 psia and 130 F, and heat is lost to the surrounding air at 70 F at a rate of 180 Btu/min. Neglecting the changes in kinetic and potential energies, determine: .

a) The mass flow of the steam inlet? (lbm/h)

b) The rate of entropy generation during this process? (BTU/minR)

2. 100 kmol/h of propane in the gas state are heated from a temperature of 100C and 1.5 atm to 550C and 2.5 atm, in a heat exchanger a) Determine the amount of heat transfermd during the process and the change of topy

-Heat transferred? (kW)

-Entropy change? (kJ/K)

b) If the heated gas is burned in a combustion reactor in a subsequent stage with the stoichiometric amount of air at 550C, determine the amount of heat generated in the process (kW)

c) Determine the entropy generation of the two previous cases Entropy generated in the exchanger? (kW/K)

Entropy generated in the reactor? (kW/K)

Consider the heat capacities dependent on temperature