5. The change in entropy for condensing 51 g ammonia (NH3()NH3) at its boiling point (240K) is 293 J/K. What is the molar enthalpy of vaporation (AHvap) for ammonia?

The thermite reaction, Fe2O3(s) + 2 Al(s) ---->2 Fe(s) +Al2O3(s), ΔH° = -851.5 kJ/mol, is one of the most exothermicreactions known. Because the heat released issufficient to melt the iron product, the reaction is used toweld metal under the ocean. How much heat is released permole of Al2O3 produced? How does this amount of thermalenergy compare with the energy released when 2 mol ofprotons and 2 mol of neutrons combine to form 1 mol ofalpha particles?

23 plz

Use the reaction for the formation of NH3 from its elements N2(g) and H2(g) . This reaction has the following thermodynamic data:  ΔfHo (NH3) = - 45.9 kJ/mol and ΔfSo (NH3) = - 99.1 J/mol*K at 298 K a) Write a balanced equation (whole number ratios) for this process and write out the expression for the reaction quotient Q using partial pressures. b) Without doing any calculations, explain how the progression of the reaction will change (more reactants or more products) with respect to 1) increasing temperature, and 2) increasing pressure. c) Calculate the equilibrium constant K at 298 K d) Assuming that : ΔfHo  is independent of temperature, calculate K at - 78o C